CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums

Blog Entries

Register Blogs Members List Search Today's Posts Mark Forums Read

Old

Case study on blood flow over nfrpc bone attached plate using computational fluid dyn

Posted February 24, 2012 at 05:36 by CHANDRAMOHAN

CASE STUDY ON BLOOD FLOW OVER NFRPC BONE ATTACHED PLATE USING COMPUTATIONAL FLUID DYNAMICS

D.Chandramohan
Ph.D., Research scholar, Department of Mechanical Engineering,
Anna University of Technology Coimbatore, Coimbatore, India
Email: mail_2_cm@yahoo.com
Mobile No:+91-9994116596
K. Marimuthu
Associate Professor, Department of Mechanical Engineering,
Coimbatore Institute of Technology, Coimbatore, India
Email: kmcit@yahoo.co.uk...
New Member
Posted in Uncategorized
Views 803 Comments 0 CHANDRAMOHAN is offline Edit Tags
Old

Using a hybrid mesh for a simple pipe

Posted February 23, 2012 at 22:18 by rikio

The method to create a hybrid mesh.

Quote:
Originally Posted by PSYMN View Post
You need to create some construction geometry between where you want the two types of mesh (a cylinder in this case). Then generate a tetra mesh on the outside and a hexa blocking on the inside. It is important that this construction geometry be uniquely named and that both mesh types are projected to it and its perimeter... Then go to Edit Mesh => Merge => Merge meshes. You can check the help from there to get the rest of the way.
...
Senior Member
Posted in Uncategorized
Views 516 Comments 0 rikio is offline Edit Tags
Old

How to compute a better gradient for sharp fields on unstructured mesh.

Posted January 31, 2012 at 10:40 by tomislav_maric
Tags gradient

In case you are dealing with sharp fields, there are multiple options to choose from. Usually, the literature recommends the "least squares approach", or linear regression. In order to get somewhere with this, the least squares points should pick up the skew cells , not just the normal own-nei surrounding cells in OpenFOAM. Still, there is a workaround that works fine:

#1) IDW interpolation of cell values to mesh points
#2) create a surface*field
#3) average the...
Senior Member
Posted in Uncategorized
Views 958 Comments 0 tomislav_maric is offline Edit Tags
Old

How to get a 27 cell stencil in OpenFOAM.

Posted January 31, 2012 at 10:30 by tomislav_maric

The primitiveMesh::cellCells returns with a cross cell stencil of 6 cells (the cell in question is excluded). This computation comes from the basis of OpenFOAM: face addressing. Although it is very efficient, this kind of computation introduces errros e.g. in the gradient reconstruction of sharp fields.

Try to generate a field that has a jump in a single layer of cells, whose iso surface is a plane, and try to compute the normal field of this plane from the fraction gradient using...
Senior Member
Posted in Uncategorized
Views 1727 Comments 2 tomislav_maric is offline Edit Tags
Old

Flow Induced Vibrations in OpenFOAM

Posted January 31, 2012 at 00:50 by aravindh28.4

My work for B.Tech thesis is on Flow Induced Vibrations- Flow around a circular cylinder.

The geometry is as follows...

A long cylinder is suspended on 4 springs-2 at 2 ends from top along the length and 2 right below them. The axis of the cylinder is horizontal. The arrangement is such that the transverse vibrations are in the direction of the spring axes.

For this, I am using OpenFOAM version2.1.0, and tutorials/incompressible/pimpleDyMFoam/wingMotion/wingMotion2D_pimpleDyMFoam...
New Member
Posted in Uncategorized
Views 1069 Comments 1 aravindh28.4 is offline Edit Tags

All times are GMT -4. The time now is 07:48.