http://www.cfd-online.com/W/index.php?title=Special:Contributions/Anurag&feed=atom&limit=50&target=Anurag&year=&month=CFD-Wiki - User contributions [en]2016-06-27T07:50:37ZFrom CFD-WikiMediaWiki 1.16.5http://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-23T05:22:34Z<p>Anurag: </p>
<hr />
<div>===What is mesh generation?===<br />
<p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of these portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
An example of a 2D analysis domain (flow over a backward facing step) and its mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
===Mesh classification===<br />
<p> As CFD has developed, better algorithms and more computation power has become available to CFD analysts, resulting in diverse solver techniques and support. One of the direct results of such developments on the field of mesh generation is development of different types of mesh elements and how they are connected to each other. As a result, meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*[[Dimension (2D, 3D or 2.5D)]]<br />
*[[Connectivity | Connectivity (structured or unstructured)]]<br />
*[[Element types]]<br />
*[[Conformity]]</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-22T12:14:46Z<p>Anurag: /* Mesh classification */</p>
<hr />
<div>===What is mesh generation?===<br />
<p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of these portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow over a backward facing step) and its mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
===Mesh classification===<br />
<p> As CFD has developed, better algorithms and more computation power has become available to CFD analysts, resulting in diverse solver techniques and support. One of the direct results of such developments on the field of mesh generation is development of different types of mesh elements and how they are connected to each other. As a result, meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*[[Dimension (2D, 3D or 2.5D)]]<br />
*[[Connectivity | Connectivity (structured or unstructured)]]<br />
*[[Element types]]<br />
*[[Conformity]]</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-22T12:13:45Z<p>Anurag: /* Mesh classification */</p>
<hr />
<div>===What is mesh generation?===<br />
<p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of these portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow over a backward facing step) and its mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
===Mesh classification===<br />
<p> As CFD has developed, better algorithms and more computation power has become available to CFD analysts, resulting in diverse solver techniques and support. One of the direct results of such developments on the field of mesh generation is development of different types of mesh elements and how they are connected to each other. As a result, meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*[[Dimension (2D, 3D or 2.5D)]]<br />
*[[Connectivity | Connectivity (structured or unstructured)]]<br />
*[[Element types | Element types (tetrahedral, hexahedral or hybrid)]]<br />
*[[Conformity | Inter element connectivity (conformal or non-conformal)]]</div>Anuraghttp://www.cfd-online.com/Wiki/Main_PageMain Page2005-09-22T12:10:33Z<p>Anurag: Removed nomenclature (moved to Textbook)</p>
<hr />
<div>Welcome to the CFD Wiki here at CFD Online. This Wiki has just been started and it is not open to the public yet. It desperately needs both content and structure so please do contribute something. New editors are adviced to read the [[Help:Contents | help section]] and take a look at the [[CFD-Wiki:Community Portal | community portal]]. We have started with a few sections listed below.<br />
<br />
;[[Textbook]]<br />
: The goal is to eventually provide a comprehensive coverage of fluid dynamics, governing equations, turbulence modeling, numerics, discretization schemes, solvers, ...<br />
<br />
;[[Application areas | Application Areas]]<br />
: Sections specifically dedicated to certain applications areas like aerospace, turbomachinery, automotive, ...<br />
<br />
;[[Special topics | Special Topics]]<br />
: Sections dedicated to special topics like heat tranfer, combustion, multi-pase flows, ...<br />
<br />
;[[Best practise guidelines | Best Practise Guidelines]]<br />
: Both general guidelines and application/topic specific guidelines.<br />
<br />
;[[Validation and test cases | Validation and Test Cases]]<br />
: Suitable cases to test and validate CFD codes with. Should include description of the case, data to compare with and contributed solutions.<br />
<br />
;[[Codes]]<br />
: An overview of both free and commercial CFD software.<br />
<br />
;[[Source code archive | Source Code Archive]]<br />
: Contribute free CFD codes and smaller "scripts" usefull for CFD people.<br />
<br />
;[[FAQ's]]<br />
: Frequently asked questions.<br />
<br />
;[[Sandbox]]<br />
: Testing grounds - a place to experiment with the Wiki. Use this area for whatever you want.<br />
<br />
Note: The layout of this Wiki will be modified to better integrate it with the rest of CFD Online. For now we can use this basic layout though. All contributed content will be automatically adapted to the new layout when it is finished.</div>Anuraghttp://www.cfd-online.com/Wiki/Reference_sectionReference section2005-09-22T12:08:51Z<p>Anurag: </p>
<hr />
<div>*[[Introduction to CFD]]<br />
*[[Fluid dynamics | Fluid Dynamics]]<br />
*[[Turbulence modeling | Turbulence Modeling]]<br />
*[[Numerical methods | Numerical Methods]]<br />
*[[Mesh generation | Mesh Generation]]<br />
*[[Nomenclature | Nomenclature]]</div>Anuraghttp://www.cfd-online.com/Wiki/Dimension_(2D,_3D_or_2.5D)Dimension (2D, 3D or 2.5D)2005-09-22T12:06:12Z<p>Anurag: Added description of mesh dimensionality</p>
<hr />
<div><p>Depending upon the analysis type and solver requirements, meshes generated could be 2-dimensional (2D) or 3-dimensional (3D).</p><br />
<br><br />
<p>For a 2D mesh, all mesh nodes lie in a given plane. In most cases, 2D mesh nodes lie in the XY plane, but can also be confined to another Cartesian or user defined plane. Most popular 2D mesh elements are quadrilaterals (also known as quads) and triangles (tris), shown below. </p><br />
[[Image:2d_elements.png]]<br />
<br />
<p>3D mesh nodes are not constrained to lie in a single plane. Most popular 3D mesh elements are hexahedra (also known as hexes or hex elements), tetrahedra (tets), square pyramids (pyramids) and extruded triangles (wedges or triangular prisms), shown below. It is worth noting that all these elements are bounded by faces belonging to the above mentioned 2D elements. Some of the current solvers also support polyhedral elements, which can be bounded by any number and types of faces.</p><br />
[[Image:3d_elements.png]]<br />
<br />
<p>Since all 3D elements are bounded by 2D elements, it is obvious that 3D meshes have exposed 2D elements at boundaries. Most of the meshing packages and solvers prefer to club exposed elements together in what is known as a surface mesh (for the purposes of applying boundary conditions, rendering meshed domains and visualizing results). A surface mesh does not have to be 2D, since volume meshes may conform to domains with non-planar boundaries. Many meshing algorithms start by meshing bounding surfaces of a domain before filling the interior with mesh nodes (such algorithms are also known as boundary to interior algorithms). For such algorithms, generation of good quality surface meshes is of prime importance, and much research has been done in the field of efficient and good quality surface mesh generation. Since surface meshes are geometrically somewhere between 2D and 3D meshes, they are also sometimes known as 2.5D meshes.</p></div>Anuraghttp://www.cfd-online.com/Wiki/File:3d_elements.pngFile:3d elements.png2005-09-22T11:39:01Z<p>Anurag: 3D mesh elements</p>
<hr />
<div>3D mesh elements</div>Anuraghttp://www.cfd-online.com/Wiki/File:2d_elements.pngFile:2d elements.png2005-09-22T11:38:37Z<p>Anurag: 2D mesh elements</p>
<hr />
<div>2D mesh elements</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-22T11:32:50Z<p>Anurag: added links to subtopics</p>
<hr />
<div>===What is mesh generation?===<br />
<p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of these portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow over a backward facing step) and its mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
===Mesh classification===<br />
<p> As CFD has developed, better algorithms and more computation power has become available to CFD analysts, resulting in diverse solver techniques and support. One of the direct results of such developments on the field of mesh generation is development of different types of mesh elements and how they are connected to each other. As a result, meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*[[Dimension (2D, 3D or 2.5D)]]<br />
*[[Connectivity (structured or unstructured)]]<br />
*[[Element types (tetrahedral, hexahedral or hybrid)]]<br />
*[[Inter element connectivity (conformal or non-conformal)]]</div>Anuraghttp://www.cfd-online.com/Wiki/Introduction_to_CFDIntroduction to CFD2005-09-21T07:01:49Z<p>Anurag: /* Where CFD scores */</p>
<hr />
<div>===What is CFD?===<br />
<p>Using abacus to computers, we have certainly come a long way. It’s been more than two hundred thousand years since the first Homo sapiens sapiens appeared on this mother earth. Life is never been faster than that of previous century. Man learned to fly. Then man learned to fly smarter. CFD certainly has played its part in it. </p><br />
<br />
<p>[[Fluid dynamics | Fluid dynamics]] is a field of engineering which studies physical laws governing flow of fluids under various conditions. An extensive amount of effort has gone into understanding the governing laws and the nature of fluids themselves, resulting in a complex yet theoretically strong field of research.</p><br />
<br />
<p><br />
Computational Fluid Dynamics or CFD as its popularly known as is simulations of flows with the help of computers. CFD involves solution of governing laws of fluid dynamics [[Numerical methods | numerically]]. The complex set of partial differential equations are solved on a geometrical problem divided into small volumes, commonly known as [[Mesh generation | mesh (or grid)]]. </p><br />
<p><br />
CFD has enabled us to see the world as never before. It was never before possible to see what its like to be in a furnace. It was never before possible to see how our blood flows in our arteries and veins. It was never before we saw a possibility of a walk into computational never land. CFD enables analysts to simulate and understand fluid flows without the help of instruments for measuring various flow variable at desired locations. </p><br />
<br />
===Where CFD scores===<br />
There are various reasons why CFD is becoming popular, some of which are:<br />
<br />
* CFD allows numerical simulation of fluid flows, results for which are available for study even after the anaylsis is over. This is a big advantage over, say, wind tunnel testing where analysts have a shorter duration to perform flow measurements.<br />
* CFD allows observation of flow properties without disturbing the flow itself, which is not always possible with conventional measuring instruments.<br />
* CFD allows observation of flow properties at locations which may not be accessible to (or harmful for) measuring instruments. For example, inside a combustion chamber, or between turbine blades.<br />
* CFD can be used as a qualitative tool for discarding (or narrowing down the choices between) various designs. Designers and analysts can study different prototypes numerically and decide to experimentally test only the ones which show promise by numerical simulation.<br />
<br />
===What CFD is not===<br />
* CFD is not yet at the level where it can be blindly used by designers or analysts without working knowledge of numerics involved.<br />
* Despite the increasing speed of computation available, CFD has not yet matured to a level where it can be used for real time computation. Numerical analyses require significant time to be set up and performed.<br />
* CFD is still an aid to other analysis and experimental tools like wind tunnel testing and is used in conjunction with them.</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-21T06:59:22Z<p>Anurag: </p>
<hr />
<div>===What is mesh generation?===<br />
<p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of these portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow over a backward facing step) and its mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
===Mesh classification===<br />
<p> As CFD has developed, better algorithms and more computation power has become available to CFD analysts, resulting in diverse solver techniques and support. One of the direct results of such developments on the field of mesh generation is development of different types of mesh elements and how they are connected to each other. As a result, meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*Dimension (2D, 3D or 2.5D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-21T06:57:58Z<p>Anurag: </p>
<hr />
<div>===What is mesh generation?===<br />
<p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow over a backward facing step) and its mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
===Mesh classification===<br />
<p> As CFD has developed, better algorithms and more computation power has become available to CFD analysts, resulting in diverse solver techniques and support. One of the direct results of such developments on the field of mesh generation is development of different types of mesh elements and how they are connected to each other. As a result, meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*Dimension (2D, 3D or 2.5D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-21T06:54:16Z<p>Anurag: </p>
<hr />
<div>===What is mesh generation?===<br />
<p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow over a backward facing step) and its mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
<p>Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*Dimension (2D or 3D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/User:AnuragUser:Anurag2005-09-21T06:51:32Z<p>Anurag: </p>
<hr />
<div>Hello.<br />
<br />
My name is Anurag Sharma, and I work in the field of mesh generation. I am 31 years old and live in Pune, India, with my wife.<br />
<br />
I hold a bachelor's degree in Aerospace Engineering from IIT Bombay, where I graduated from in 1996. After graduation I worked for Fluent India Pvt. Ltd. in the field of mesh generation (initially as an application engineer in automotive consulting group, then as a lead developer in GAMBIT, and finally as project manager for TGrid) till 2003. Then I had a short stint at Unigraphics, where I worked in the Kinematics module for UG NX 3. In december 2003 I started a firm called [http://www.pderivative.com Partial Derivative], specializing in CAE software development. We currently provide software development services in the field of advanced mesh generation algorithms and implementation to established CFD firms.<br />
<br />
I am looking forward to contribute to this site in the field of mesh generation.</div>Anuraghttp://www.cfd-online.com/Wiki/Introduction_to_CFDIntroduction to CFD2005-09-21T06:45:02Z<p>Anurag: </p>
<hr />
<div>===What is CFD?===<br />
<p>Using abacus to computers, we have certainly come a long way. It’s been more than two hundred thousand years since the first Homo sapiens sapiens appeared on this mother earth. Life is never been faster than that of previous century. Man learned to fly. Then man learned to fly smarter. CFD certainly has played its part in it. </p><br />
<br />
<p>[[Fluid dynamics | Fluid dynamics]] is a field of engineering which studies physical laws governing flow of fluids under various conditions. An extensive amount of effort has gone into understanding the governing laws and the nature of fluids themselves, resulting in a complex yet theoretically strong field of research.</p><br />
<br />
<p><br />
Computational Fluid Dynamics or CFD as its popularly known as is simulations of flows with the help of computers. CFD involves solution of governing laws of fluid dynamics [[Numerical methods | numerically]]. The complex set of partial differential equations are solved on a geometrical problem divided into small volumes, commonly known as [[Mesh generation | mesh (or grid)]]. </p><br />
<p><br />
CFD has enabled us to see the world as never before. It was never before possible to see what its like to be in a furnace. It was never before possible to see how our blood flows in our arteries and veins. It was never before we saw a possibility of a walk into computational never land. CFD enables analysts to simulate and understand fluid flows without the help of instruments for measuring various flow variable at desired locations. </p><br />
<br />
===Where CFD scores===<br />
There are various reasons why CFD is becoming popular, some of which are:<br />
<br />
* CFD allows numerical simulation of fluid flows, results for which are available for study even after the anayliss is over. This is a big advantage over, say, wind tunnel testing where analysts have a shorter duration to perform flow measurements.<br />
* CFD allows observation of flow properties without disturbing the flow itself, which is not always possible with conventional measuring instruments.<br />
* CFD allows observation of flow properties at locations which may not be accessible to (or harmful for) measuring instruments. For example, inside a combustion chamber, or between turbine blades.<br />
* CFD can be used as a qualitative tool for discarding (or narrowing down the choices between) various designs. Designers and analysts can study different prototypes numerically and decide to experimentally test only the ones which show promise by numerical simulation.<br />
<br />
===What CFD is not===<br />
* CFD is not yet at the level where it can be blindly used by designers or analysts without working knowledge of numerics involved.<br />
* Despite the increasing speed of computation available, CFD has not yet matured to a level where it can be used for real time computation. Numerical analyses require significant time to be set up and performed.<br />
* CFD is still an aid to other analysis and experimental tools like wind tunnel testing and is used in conjunction with them.</div>Anuraghttp://www.cfd-online.com/Wiki/Introduction_to_CFDIntroduction to CFD2005-09-21T06:38:49Z<p>Anurag: </p>
<hr />
<div><p>Using abacus to computers, we have certainly come a long way. It’s been more than two hundred thousand years since the first Homo sapiens sapiens appeared on this mother earth. Life is never been faster than that of previous century. Man learned to fly. Then man learned to fly smarter. CFD certainly has played its part in it. </p><br />
<br />
<p>[[Fluid dynamics | Fluid dynamics]] is a field of engineering which studies physical laws governing flow of fluids under various conditions. An extensive amount of effort has gone into understanding the governing laws and the nature of fluids themselves, resulting in a complex yet theoretically strong field of research.</p><br />
<br />
<p><br />
Computational Fluid Dynamics or CFD as its popularly known as is simulations of flows with the help of computers. CFD involves solution of governing laws of fluid dynamics [[Numerical methods | numerically]. The complex set of partial differential equations are solved on a geometrical problem divided into small volumes, commonly known as [[Mesh generation | mesh (or grid)]]. </p><br />
<p><br />
CFD has enabled us to see the world as never before. It was never before possible to see what its like to be in a furnace. It was never before possible to see how our blood flows in our arteries and veins. It was never before we saw a possibility of a walk into computational never land. CFD enables analysts to simulate and understand fluid flows without the help of instruments for measuring various flow variable at desired locations. </p><br />
<br />
<p>There are various reasons why CFD is becoming popular, some of which are: </p><br />
<br />
* CFD allows numerical simulation of fluid flows. Results of these simulations are available for study even after the anaylis is over. This is a big advantage over, say, wind tunnel testing where analysts have a shorter duration to perform flow measurements.<br />
* CFD allows observation of flow properties without disturbing the flow itself, which is not always possible with conventional measuring instruments.<br />
* CFD allows observation of flow properties at locations which may not be accessible to (or harmful for) measuring instruments. For example, inside a combustion chamber, or between turbine blades.<br />
* CFD can be used as a qualitative tool for discarding (or narrowing down the choices between) various designs. Designers and analysts can study different prototypes numerically and decide to experimentally test only the ones which show promise by numerical simulation.<br />
<br />
<p>At the same time, there are some shortcomings of CFD. Following is a summary of what CFD is not.</p><br />
* CFD is not yet at the level where it can be blindly used by designers or analysts without working knowledge of numerics involved.<br />
* Despite the increasing speed of computation available, CFD has not yet matured to a level where it can be used for real time computations. Numerical analyses require significant time to be set up and performed.<br />
* CFD is still an aid to other analysis and experimental tools like wind tunnel testing and is used in conjunction with them.</div>Anuraghttp://www.cfd-online.com/Wiki/Introduction_to_CFDIntroduction to CFD2005-09-21T06:38:10Z<p>Anurag: </p>
<hr />
<div><p>Using abacus to computers, we have certainly come a long way. It’s been more than two hundred thousand years since the first Homo sapiens sapiens appeared on this mother earth. Life is never been faster than that of previous century. Man learned to fly. Then man learned to fly smarter. CFD certainly has played its part in it. </p><br />
<br />
<p>[[Fluid dynamics | Fluid dynamics]] is a field of engineering which studies physical laws governing flow of fluids under various conditions. An extensive amount of effort has gone into understanding the governing laws and the nature of fluids themselves, resulting in a complex yet theoretically strong field of research.</p><br />
<br />
<p><br />
Computational Fluid Dynamics or CFD as its popularly known as is simulations of flows with the help of computers. CFD involves solution of governing laws of fluid dynamics [[Numerical methods | numerically]. The complex set of partial differential equations are solved on a geometrical problem divided into small volumes, commonly known as [[Mesh generation | mesh (or grid)]]. </p><br />
<p><br />
CFD has enabled us to see the world as never before. It was never before possible to see what its like to be in a furnace. It was never before possible to see how our blood flows in our arteries and veins. It was never before we saw a possibility of a walk into computational never land. CFD enables analysts to simulate and understand fluid flows without the help of instruments for measuring various flow variable at desired locations. </p><br />
<br />
<p>There are various reasons why CFD is becoming popular, some of which are: </p><br />
<br />
* CFD allows numerical simulation of fluid flows. Results of these simulations are available for study even after the anaylis is over. This is a big advantage over, say, wind tunnel testing where analysts have a shorter duration to perform flow measurements.<br />
* CFD allows observation of flow properties without disturbing the flow itself, which is not always possible with conventional measuring instruments.<br />
* CFD allows observation of flow properties at locations which may not be accessible to (or harmful for) measuring instruments. For example, inside a combustion chamber, or between turbine blades.<br />
* CFD can be used as a qualitative tool for discarding (or narrowing down the choices between) various designs. Designers and analysts can study different prototypes numerically and decide to experimentally test only the ones which show promise by numerical simulation.<br />
<br />
<p>At the same time, there are some shortcomings of CFD. The following is a summary of what CFD is not.</p><br />
* CFD is not yet at the level where it can be blindly used by designers or analysts without working knowledge of numerics involved.<br />
* Despite the increasing speed of computation available, CFD has not yet matured to a level where it can be used for real time computations. Numerical analyses require significant time to be set up and performed.<br />
* CFD is still an aid to other analysis and experimental tools like wind tunnel testing and is used in conjunction with them.</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-21T06:26:50Z<p>Anurag: </p>
<hr />
<div><p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow over a backward facing step) and its mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
<p>Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*Dimension (2D or 3D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Introduction_to_CFDIntroduction to CFD2005-09-21T06:18:33Z<p>Anurag: </p>
<hr />
<div><p>Using abacus to computers, we have certainly come a long way. It’s been more than two hundred thousand years since the first Homo sapiens sapiens appeared on this mother earth. Life is never been faster than that of previous century. Man learned to fly. Then man learned to fly smarter. CFD certainly has played its part in it. </p><br />
<p><br />
Computational Fluid Dynamics or CFD as its popularly known as is simulations of flows with the help of computers. The complex set of partial differential equations are solved on a geometrical problem divided into small volumes, commonly known as [[Mesh generation | mesh (or grid)]]. </p><br />
<p><br />
CFD has enabled us to see the world as never before. It was never before possible to see what its like to be in a furnace. It was never before possible to see how our blood flows in our arteries and veins. It was never before we saw a possibility of a walk into computational never land.</p></div>Anuraghttp://www.cfd-online.com/Wiki/Introduction_to_CFDIntroduction to CFD2005-09-21T06:18:05Z<p>Anurag: </p>
<hr />
<div><p>Using abacus to computers, we have certainly come a long way. It’s been more than two hundred thousand years since the first Homo sapiens sapiens appeared on this mother earth. Life is never been faster than that of previous century. Man learned to fly. Then man learned to fly smarter. CFD certainly has played its part in it. </p><br />
<p><br />
Computational Fluid Dynamics or CFD as its popularly known as is simulations of flows with the help of computers. The complex set of partial differential equations are solved on a geometrical problem divided into small volumes, commonly known as [[mesh (or grid) | Mesh generation]]. </p><br />
<p><br />
CFD has enabled us to see the world as never before. It was never before possible to see what its like to be in a furnace. It was never before possible to see how our blood flows in our arteries and veins. It was never before we saw a possibility of a walk into computational never land.</p></div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-21T06:13:33Z<p>Anurag: </p>
<hr />
<div><p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow over a backward facing step) and it's mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
<p>Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*Dimension (2D or 3D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-21T06:13:16Z<p>Anurag: </p>
<hr />
<div><p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analysis, a domain split into elements resembles a wire mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow analysis over a backward facing step) and it's mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
<p>Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*Dimension (2D or 3D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-21T06:08:54Z<p>Anurag: </p>
<hr />
<div><p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a domain split into elements resembles a mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain (flow analysis over a backward facing step) and it's mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
<p>Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*Dimension (2D or 3D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-21T06:08:25Z<p>Anurag: </p>
<hr />
<div><p>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a domain split into elements resembles a mesh, hence the name.</p><br />
<br />
Examples of a 2D analysis domain and it's mesh are shown in pictures below.<br />
<br />
[[Image:Domain.png|Domain for 2D analysis of backward facing step]]<br />
[[Image:Domain-mesh.png|Meshed domain]]<br />
<br />
<p>Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:</p><br />
<br />
*Dimension (2D or 3D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/File:Domain.pngFile:Domain.png2005-09-21T06:05:32Z<p>Anurag: An analysis domain.</p>
<hr />
<div>An analysis domain.</div>Anuraghttp://www.cfd-online.com/Wiki/File:Domain-mesh.pngFile:Domain-mesh.png2005-09-21T06:05:10Z<p>Anurag: A meshed domain.</p>
<hr />
<div>A meshed domain.</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-20T11:45:54Z<p>Anurag: Sorry, still learning tricks of the trade</p>
<hr />
<div>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a domain split into elements resembles a mesh, hence the name.<br />
<br />
Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:<br />
<br />
*Dimension (2D or 3D)<br />
*Connectivity (structured or unstructured)<br />
*Element types (tetrahedral, hexahedral or hybrid)<br />
*Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-20T11:45:24Z<p>Anurag: </p>
<hr />
<div>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a domain split into elements resembles a mesh, hence the name.<br />
<br />
Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:<br />
<br />
*Dimension (2D or 3D)<br />
*[[Connectivity (structured or unstructured)]]<br />
*[[Element types (tetrahedral, hexahedral or hybrid)]]<br />
*[[Inter element connectivity (conformal or non-conformal)]]</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-20T11:44:49Z<p>Anurag: </p>
<hr />
<div>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a domain split into elements resembles a mesh, hence the name.<br />
<br />
Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:<br />
<br />
*[[Dimension (2D or 3D)]]<br />
*[[Connectivity (structured or unstructured)]]<br />
*[[Element types (tetrahedral, hexahedral or hybrid)]]<br />
*[[Inter element connectivity (conformal or non-conformal)]]</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-20T11:43:53Z<p>Anurag: </p>
<hr />
<div>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a domain split into elements resembles a mesh, hence the name.<br />
<br />
Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:<br />
<br />
[[* Dimension (2D or 3D)]]<br />
[[* Connectivity (structured or unstructured)]]<br />
[[* Element types (tetrahedral, hexahedral or hybrid)]]<br />
[[* Inter element connectivity (conformal or non-conformal)]]</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-20T11:43:22Z<p>Anurag: </p>
<hr />
<div>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a domain split into elements resembles a mesh, hence the name.<br />
<br />
Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:<br />
<br />
[[Dimension (2D or 3D)]]<br />
[[Connectivity (structured or unstructured)]]<br />
[[Element types (tetrahedral, hexahedral or hybrid)]]<br />
[[Inter element connectivity (conformal or non-conformal)]]</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-20T11:42:16Z<p>Anurag: typos</p>
<hr />
<div>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be put together to give a complete picture of fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a domain split into elements resembles a mesh, hence the name.<br />
<br />
Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based one on or more the following important criteria:<br />
<br />
i) Dimension (2D or 3D)<br />
ii) Connectivity (structured or unstructured)<br />
iii) Element types (tetrahedral, hexahedral or hybrid)<br />
iv) Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Mesh_generationMesh generation2005-09-20T11:40:27Z<p>Anurag: Definition of mesh generation</p>
<hr />
<div>The set of partial differential equations governing fluid flows and heat transfers are not amenable to analytical solutions, except for very simple cases. Therefore, in general, in order to analyze fluid flows, flow domains are split into smaller portions (made up of geometric primitives like hexahedra and tatrahedra in 3D, and quadrilaterals and triangles in 2D) and linearized governing equations are solved inside each of these portions of the domain. Care is taken to ensure continuity of solution across the common interfaces between two portions, so that the linearized solutions inside various portions can be out together to give the fluid flow in the entire domain. Each of the portions of the domain are known as elements, and the collection of all elements is known as mesh or grid. The origin of the term mesh (or grid) goes back to early days of CFD when most analyses were 2D in nature. For 2D analyses, a somain split into elements resembles a mesh, hence the name.<br />
<br />
Mesh generation is the field of CFD which deals with creation of meshes from given domain definitions. There are various classifications of meshes, and mesh generation can be a very complex process in itself. Meshes can be classified based on on or more the following criteria (maybe even more):<br />
<br />
i) Dimension (2D or 3D)<br />
ii) Connectivity (structured or unstructured)<br />
iii) Element types (tetrahedral, hexahedral or hybrid)<br />
iv) Inter element connectivity (conformal or non-conformal)</div>Anuraghttp://www.cfd-online.com/Wiki/Reference_sectionReference section2005-09-20T11:28:35Z<p>Anurag: Added a link to Mesh generation</p>
<hr />
<div>*[[Introduction to CFD]]<br />
*[[Fluid dynamics | Fluid Dynamics]]<br />
*[[Turbulence modeling | Turbulence Modeling]]<br />
*[[Numerical methods | Numerical Methods]]<br />
*[[Mesh generation | Mesh Generation]]</div>Anuraghttp://www.cfd-online.com/Wiki/User:AnuragUser:Anurag2005-09-20T10:45:54Z<p>Anurag: Added my profile</p>
<hr />
<div>Hello.<br />
<br />
My name is Anurag Sharma, and I work in the field of mesh generation. I am 31 years old and live in Pune with my wife.<br />
<br />
I hold a bachelor's degree in Aerospace Engineering from IIT Bombay, where I graduated from in 1996. After graduation I worked for Fluent India Pvt. Ltd. in the field of mesh generation (initially as an application engineer in automotive consulting group, and later as a developer for GAMBIT and TGrid) till 2003. Then I had a short stint at UGS, where I worked in the Kinematics module for UG NX3. In december 2003 I started Partial Derivative, a CAE software development company. We currently provide software development services in the field of advanced mesh generation algorithms and implementation to established CFD firms.<br />
<br />
I am looking forward to contribute to this site in the field of mesh generation.</div>Anuraghttp://www.cfd-online.com/Wiki/CFD-Wiki:Community_portalCFD-Wiki:Community portal2005-09-20T10:39:21Z<p>Anurag: Added my name to the list of contributors</p>
<hr />
<div>This section is intended for people who work on adding content to the Wiki. If you still haven't contributed to the Wiki please do so! We need your help and everyone is welcome to join our team of Wiki editors. For technical details and guidelines on how to contribute material to the Wiki read the [[Help:Contents]] page. We also have a [http://www.cfd-online.com/Forum/wiki.cgi discussion forum] for us Wiki editors. These can also be reached via the links in the navigation section to the left.<br />
<br />
The Wiki has gotten off to a flying start. We have a basic structure and more and more people are joining us. The plan is to launch the Wiki publicly by the end of October (which year depends on us ;-)<br />
<br />
== What's in the works ==<br />
<br />
You who do significant additions to the Wiki, please add some information about your work, plans and progress here so that others can see what you are working on and perhaps help, monitor, come with suggestions and most importantly, be inspired by.<br />
<br />
* We now have a [http://www.cfd-online.com/Forum/wiki.cgi dicussion forum] where we can discuss our work on the Wiki. We should use the forum to coordinate our efforts and agree on common standards and styles. --[[User:Jola|Jola]] 10:44, 18 September 2005 (MDT)<br />
<br />
* I'm working hard on recruiting more Wiki editors. We need all the help we can get with this ambitious project. I'm in email contact with several experienced CFD guys. In addition, I have posted several invitations to join us on the discussion forums. I also posted a job-ad in the jobs database here at CFD Online. --[[User:Jola|Jola]] 10:44, 18 September 2005 (MDT)<br />
<br />
* The [[Numerical methods|numerics section]] is groving very quickly now and has a very ambitious table of content. Michail and zxaar are working hard on it. It is a very large area though so if you can help please do so. --[[User:Jola|Jola]] 10:44, 18 September 2005 (MDT)<br />
<br />
* We have been allowed to base the [[Turbulence|turbulence section]] on an excellent book on turbulence written by Professor William K. George. Pavitran is responsible for this work. Expect to see significant additions in this section. --[[User:Jola|Jola]] 10:44, 18 September 2005 (MDT)<br />
<br />
* The [[Validation and test cases|validation and test-case section]] has gotten off to a flying start. Both Praveen and Jasond have already added several cases. --[[User:Jola|Jola]] 10:44, 18 September 2005 (MDT)<br />
<br />
* We have a first [[Special topics|special topics section]] on [[Combustion|combustion]]. ForMat has created a basic structure and are adding content to it. --[[User:Jola|Jola]] 10:44, 18 September 2005 (MDT)<br />
<br />
* I've started work on creating a first best-practise guide. We need some sort of first example for how one of these should look. I chose to start with a guide for [[Best practise guidelines for turbomachinery CFD | turbomachinery CFD]]. --[[User:Jola|Jola]] 10:44, 18 September 2005 (MDT)<br />
<br />
== What needs to be done ==<br />
<br />
* We have many turbulence models listed in the [[turbulence modeling]] section which still lack any description. Feel free to pick a model that you are familiar with and write a description of it. --[[User:Jola|Jola]] 01:50, 13 September 2005 (MDT)<br />
<br />
* The [[FAQ's | FAQ]] section is still very thin. If you are familiar with one of the larger CFD codes please consider adding a few questions and answers to the FAQ. --[[User:Jola|Jola]] 08:28, 13 September 2005 (MDT)<br />
<br />
* If you are an experienced CFD engineer and an expert in a special application area you are very welcome to start a [[Best practise guidelines|best practise guideline]] for your speciality. --[[User:Jola|Jola]] 10:44, 18 September 2005 (MDT)<br />
<br />
* ''... add your suggestions on what should be done here''<br />
<br />
== Wiki editors - Who we are ==<br />
<br />
Add your name here if you make contributions to the wiki. The order is alphabetical based on the last name.<br />
<br />
* [[User:praveen]] - Praveen. C<br />
* [[User:jasond]] - Jason D.<br />
* [[User:Pavitran]] - Pavitran. D<br />
* [[User:ForMat]] - Matej Forman<br />
* [[User:harish]] - Harish Gopalan<br />
* [[User:Michail]] - Michail Kirichkov<br />
* [[User:jola]] - Jonas Larsson<br />
* [[User:anurag]] - Anurag Sharma<br />
* [[User:zxaar]] - Arjun Yadav</div>Anurag