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NAFEMS top

► NAFEMS World Congress 2019 Preliminary Agenda Launched
  15 Mar, 2019
NAFEMS World Congress 2019 Preliminary Agenda LaunchedQUEBEC CITY, CANADA, & GLASGOW, UK, MARCH 15TH 2019 – NAFEMS, the International Association for the Engineering Analysis, Modelling and
► Keynote Speakers announced for NAFEMS World Congress 2019
    7 Feb, 2019
Keynote Speakers announced for NAFEMS World Congress 2019The International Association for the Engineering Analysis Community Launches Extensive Roster of Keynotes for it’s Biennial World Congre
► Memorandum of Understanding between NAFEMS, prostep ivip, PDES, Inc. and AFNeT on behalf of LOTAR and CAE-IF signed 16 October 2018
    6 Feb, 2019
Memorandum of Understanding between NAFEMS, prostepivip, PDES, Inc. and AFNeT on behalf of LOTAR and CAE-IF signed 16 October 2018NAFEMS, prostep ivip, PDES, Inc. and AFNeT on behalf of LOTAR and CAE-
► 5 Reasons to Submit your Abstract for the NAFEMS World Congress 2019
    9 Nov, 2018
5 reasons to submit your abstract for the NAFEMS World Congress 2019 #NAFEMS19 1. Influence the Direction of SimulationNAFEMS is the voice of the CAE community – as simulation moves towards the
► Latest NAFEMS Publications
    1 Nov, 2018
Latest NAFEMS PublicationsThe following publications have been published recently and sent to our members.How To Perform Linear Dynamic Analysis This book aims to provide guidance on the usage of comm
► NAFEMS World Congress 2019 - Call for Papers Now Open
  30 Jul, 2018
NAFEMS are delighted to announce that the call for papers for the 2019 NAFEMS World Congress, in Quebec City, Canada, 17-20 June 2019, is now open.Engineering analysis, modelling and simulation are dy

OpenFOAM ESI-OpenCFD top

► OpenFOAM-v1912 released
  23 Dec, 2019
ESI OpenCFD Ltd. is pleased to announce the release of OpenFOAM v1912.

This December marks the 15 year anniversary since OpenCFD first brought
you OpenFOAM, free and open source.

This December's release includes significant new functionality, including:
-
  • new adjoint-based automated shape optimisation tools
  • new interface-tracking dynamic meshes
  • new turbulence stabilisation for incompressible multiphase systems
  • new expressions engine that offers greater control and flexibility
    over your case set-ups
  • new collimated radiaion modelling
  • new k-epsilon-phit-f RANS tubulence model closure
  • new binary file compatibility
  • new weighted flux differencing scheme
  • and much more!
For more information, visit

OpenFOAM.com/releases/OpenFOAM-v1912
► OpenFOAM-v1906 released
  18 Dec, 2019
OpenCFD is pleased to announce the release of OpenFOAM-v1906.

This release extends OpenFOAM-v1812 features across many areas of the code. The new functionality represents development sponsored by OpenCFDs customers, internally funded developments, and the integration of features and changes from the OpenFOAM community.


Among other developments it features:
- New adjoint shape optimisation capabilities,
- dry-run option for SnappyHexMesh,
- new relaxed patch regioning in SnappyHexMesh,
- new mixed-precision single/double precision running,
- new overset-enabled buoyant solver,
- new synthetic turbulence generation method for LES/DES



... and many other developments or improvements from OpenFOAM team or contributors.


The detailed list can be found at: http://openfoam.com/releases/openfoam-v1906/


OpenFOAM-v1906 can be downloaded as:

- source code
- precompiled Docker images for Linux, Windows and Mac operating systems
- MS windows cross-compiled native executable distribution
- available also in the spack HPC package manager via the 'openfoam-com' package.

Details can be found on http://openfoam.com/download/installation.php

OpenFOAM Foundation top

► OpenFOAM v7 Released
    8 Jul, 2019
From the Release Announcement...


The OpenFOAM Foundation is pleased to announce the release of version 7 of the OpenFOAM open source CFD toolbox. Version 7 is a snapshot of the OpenFOAM development version which, through sustainable development, is always-releasable. It provides new functionality and major improvements to existing code, with strict demands on usability, robustness and extensibility.
OpenFOAM 7 includes the following key developments.
  • Heat transfer: consolidated solvers and improved convergence and robustness.
  • Particle tracking: improved robustness and optimized computation.
  • Multiphase: wave damping, configurable inlet phase properties, better settling numerics.
  • Reacting multiphase models: heat transfer, population balance, breakup, coalescence.
  • Reactions/combustion: simplified case setup.
  • Turbulence: improved consistency and stability of wall functions, added sources.
  • Thermophysical: thermodynamic functions, temperature-strain-dependent viscosity.
  • Other models: atmospheric, rigid body dynamics, boundary conditions, sources.
  • Mesh: standardized dynamic mesh capability, improved motion solvers.
  • Case Configuration: improved data visualization, setup tools, function objects.
  • Computation: improvements to containers, fields, parallel running, etc.
  • Approximately 550 code commits, 250+ resolved issues
  • ISO/IEC 14882:2011 (C++11): tested for GCC v4.8+, Clang v7.0+, Intel ICC v18.0+.
OpenFOAM 7 is packaged for the following platforms, with ParaView 5.6.0 including Mesa with LLVM/Gallium acceleration for systems without a (supported) graphics card:
The OpenFOAM 7 Source Pack can be compiled on suitable Linux platforms.

Credits

OpenFOAM 7 was produced by:
  • Core Team (CFD Direct): Henry Weller (co-founder & lead developer); Chris Greenshields (co-founder), Will Bainbridge
  • Developers/Maintainers: Mattijs Janssens (co-founder), Juho Peltola, Timo Niemi, Fabian Schlegel, Ronald Oertel, Bruno Santos
  • Patch Contributors: Francesco Contino, Lorenzo Trevisan, Federico Piscaglia, Robert Lee, SeongMo Yeon, Alberto Passalacqua
Licence

OpenFOAM 7 is distributed under the General Public Licence v3 by the OpenFOAM Foundation.

OpenFOAM Other Sources top

► FOAMacademy-Training "OpenFOAM for Turbomachinery Applications" 21.1./22.1.2020
  14 Jan, 2020
Last chance to register for our training next week on "OpenFOAM for Turbomachinery Applications"!
We have extended the scope to also include examples for overset mesh.
Please see our website for registration:
https://www.foamacademy.com/events/e...opeller-turbo/
► OpenFOAM introductory training. July 13-17, 2020. Genova, Italy.
  26 Dec, 2019
OpenFOAM introductory training. July 13-17, 2020. Genova, Italy. (https://bit.ly/2SuMoQa)

This course is offered in cooperation with the University of Genova and Wolfdynamics (http://www.wolfdynamics.com). The course last five days, which we think is the minimum time needed to introduce all the concepts of OpenFOAM as a general CFD and multiphysics solver, advanced topics, and the CAD/Meshing/Visualization tools.

This training is aimed at those with little or no experience in the use of OpenFOAM, or those who want to improve their skills using OpenFOAM as a general-purpose CFD and Multiphysics solver. During the lectures, the attendees will be introduced to all aspects of OpenFOAM as a general-purpose CFD solver, from structure and organization of the library to setting cases from scratch, to assessing the convergence, to post-processing, to basic programming. Additionally, we will also address solid modeling and scientific visualization. During this training, we also cover the following advanced physical models: turbulence modeling, multiphase flows, heat transfer, moving bodies, and source terms. Hands-on sessions will be organized, where the participants will have the opportunity to solve predefined cases (or their own cases) with the assistance and guidance of the course trainers. To help the learning process, a short introduction to the finite volume method will also be provided. The course prepares the attendees to conduct end-to-end CFD studies, that is, CAD → Meshing → Simulations → Design exploration → Data analytics, using the numerical library OpenFOAM®.

Prerequisites: no prior knowledge of OpenFOAM®, C++ or Linux is required. However, a basic knowledge of Linux is beneficial. A basic knowledge of CFD is also desirable.

Training material: every participant will get a copy of the printed lecture notes and a USB key with the supporting material.

Teaching method: lectures and hands-on sessions to validate the acquired knowledge. A training certificate is provided to all attendees who complete the course.

Additional notes: attendees are not required to bring their own laptop since workstations with pre-installed software will be available. The inscription fee includes lunch and refreshments.

For more information, visit the following link https://bit.ly/2SuMoQa


Hurry up and get your seat right now to take advantage of the early registration discount.
► OpenFOAM advanced training. July 27-31, 2020
  26 Dec, 2019
OpenFOAM advanced training. July 27-31, 2020 (https://bit.ly/2Mv5IsR)

We want to draw your attention to the upcoming OpenFOAM advanced training session that will take place in July 27-31, 2020. During this classroom training session we will address the following topics:

  • July 27, 2020 - Introduction to solid modeling for general CFD and meshing using OpenFOAM technology - Onshape and snappyHexMesh.
  • July 28, 2020 - Design of experiments, space exploration, knowledge extraction, and numerical optimization using Dakota - Code coupling Dakota-OpenFOAM.
  • July 29, 2020 - Turbulence modeling in general CFD and OpenFOAM - Theory and applications.
  • July 30, 2020 - Introduction to the FVM method. Standard practices in general CFD with applications to OpenFOAM.
  • July 31, 2020 - Open day (free for participants of the advanced training). This day (from 9:30 to 16:00), is dedicated to helping participants to setup their cases. Note: Lunch is not included.

So hurry up and book your place, you are still on time to take advantage of ours reduced fees.

You can find more information in the following link: https://bit.ly/2Mv5IsR




Prerequisites: intermediate knowledge of CFD, OpenFOAM, and Linux is required. Some basic knowledge of C++ and shell scripting is beneficial.

Location: DICCA, University of Genova, (via Montallegro 1, 16145 Genova, Italy).

Course times: from 9:00 am to 5:00 pm, plus 30 minutes of Q&A.

Language: English

Number of seats: 15 places available.

Training material: every participant will get a copy of the printed lecture notes (high quality color), and a USB key with the supporting material.

Teaching method: lectures and hands-on sessions to validate the acquired knowledge. A training certificate is provided to all attendees who complete the course.

Additional information:
These courses are offered in cooperation with the University of Genova.

The fee includes the printed material (high quality color), a USB key with the supporting material, and lunch and refreshments.

Attendees are not required to bring their own laptop since workstations with pre-installed software will be available.
► OpenFOAM advanced training. February 17-21, 2020
  26 Dec, 2019
OpenFOAM advanced training. February 17-21, 2020 (https://bit.ly/2ESDAeP)

We want to draw your attention to the upcoming OpenFOAM advanced training session that will take place in February 5-8, 2019. During this classroom training session we will address the following topics:
  • February 17, 2020 - Turbulence modeling in general CFD and OpenFOAM - Theory and applications.
  • February 18, 2020 - Multi-phase flows modeling in general CFD and OpenFOAM - Theory and applications.
  • February 19, 2020 - Moving meshes, rigid body motion, adaptive mesh refinement, and overset meshes.
  • February 20, 2020 - Introduction to the FVM method. Standard practices in general CFD with applications to OpenFOAM.
  • February 21, 2020 - Open day (free for participants of the advanced training). This day (from 9:30 to 16:00), is dedicated to helping participants to setup their cases. Note: Lunch is not included.

So hurry up and book your place, you are still on time to take advantage of ours reduced fees.

You can find more information at the following link: https://bit.ly/2ESDAeP

Prerequisites: intermediate knowledge of CFD, OpenFOAM, and Linux is required. Some basic knowledge of C++ and shell scripting is beneficial.

Location: DICCA, University of Genova, (via Montallegro 1, 16145 Genova, Italy).

Course times: from 9:00 am to 5:00 pm, plus 30 minutes of Q&A.

Language: English

Number of seats: 15 places available.

Training material: every participant will get a copy of the printed lecture notes (high quality color), and a USB key with the supporting material.

Teaching method:
lectures and hands-on sessions to validate the acquired knowledge. A training certificate is provided to all attendees who complete the course.

Additional information:
These courses are offered in cooperation with the University of Genova.

The fee includes the printed material (high quality color), a USB key with the supporting material, and lunch and refreshments.

Attendees are not required to bring their own laptop since workstations with pre-installed software will be available.
► Computational Fluid Dynamics with Open-Source Software Course in Milan
  13 Dec, 2019
ICE Group and Energy Department of Politecnico di Milano organize a 6-days OpenFOAM course (22-24 January / 17-19 March). Teachers will be Prof. Hrvoje Jasak, Prof. Gavin Tabor, Dr. Holger Marschall, Dr. Augusto Della Torre and Prof. Tommaso Lucchini.

The course will be focused on:
  • CFD: basics, turbulence, incompressible, compressible and multiphase flows.
  • Object oriented programming techniques applied to CFD modeling;
  • Pre and post-processing techniques

Course program


Wednesday, 22th January 2020 (Prof. Tommaso Lucchini)
Overview of the OpenFOAM structure: case setup, mesh generation, post-processing. Hands-on session.

Thursday, 23th January 2020 (Dr. Augusto Della Torre)
Mesh generation in OpenFOAM: block-structured grids, use of open-source tools (snappyHexMesh, cfMesh), mesh conversion from Third Party software. Hands-on session.

Friday, 24th January 2020 (Prof. T. Lucchini & Dr. A. Della Torre)
Overview of OpenFOAM solvers for compressible flows, heat transfer, lagrangian tracking, reacting flows. Hands-on session.

Tuesday, 17th March 2020 (Prof. Gavin Tabor)
Introduction to turbulence and its modeling. RANS, LES and DES turbulence modeling. Hands-on session.

Wednesday, 18th March 2020 (Prof. Hrvoje Jasak)
Object oriented programming language applied to CFD modeling.*Mesh management techniques: deformation, topological changes, generalized grid interface, immersed boundary.

Thursday 19th March 2020 (Prof. Holger Marschall)
Executive summary of simulation methods for multiphase flows. High Resolution Schemes in OpenFOAM and specialisation to interface/shock capturing schemes. Hands-on session.

Detailed information (registration, locations, costs) can be found at this link: http://www.energia.polimi.it/uploads...nFOAM-2020.pdf
► 4th FOAM@Iberia Meeting - 19th & 20th May 2020 , Santander (SPAIN)
  11 Dec, 2019
Dear Foamers,

I am pleased to announce the 4th FOAM@Iberia Meeting, which will be held on 19 and 20 May 2020, at the IHCantabria headquarters in Santander (Spain).

https://foam-iberia.eu

These informal meetings are an opportunity to meet OpenFOAM®, meet and interact with other OpenFOAM® users/developers, learn about the latest developments in the computer library, and share and disseminate their OpenFOAM® achievements. These events are intended to play an important role in the dissemination of OpenFOAM® not only in Portugal and Spain, as they are also open to participants from around the world.

The FOAM@Iberia meetings are open to everyone regardless of origin and/or area of activity. Additionally, you can visit and enjoy the attractions of Santander (a boat trip on one of the most beautiful bays in the world, Centro Botín Museum a syymbol of modernity and a point of reference in the world of culture, over a dozen beaches at various points, ttraditional gastronomy based on marine products, …).

Key dates:
· 28th February: deadline for submitting an abstract.
· 15th March: acceptance of the contributions.
· 15th April: Early Bird Registration deadline.
· 15th May: Regular Registration deadline.
· 19th – 20th May: Conference Dates.

Stay tuned in the coming weeks for more conference announcements.

On Behalf of the organizing committee,

Javier L. Lara
Maria Maza
Gabriel Barajas
Inigo J. Losada

OpenFOAM Wiki top

► ChemFoam
  19 Jan, 2020

Chemical reactions

← Older revision Revision as of 15:19, 19 January 2020
(5 intermediate revisions by the same user not shown)
Line 152: Line 152:
 
==Chemical reactions==
 
==Chemical reactions==
   
Elementary chemical reaction involving <math> K </math> species in <math> I </math> reactions can be expressed in the following form (see also https://www3.nd.edu/~powers/ame.60636/chemkin2000.pdf):
+
Elementary chemical reaction involving <math> K </math> species in <math> I </math> reactions can be expressed in the following form (see also https://www3.nd.edu/~powers/ame.60636/chemkin2000.pdf or the book of <ref>  Powers, Joseph. Combustion thermodynamics and dynamics. Cambridge University Press, 2016. </ref>):
   
 
<table width="70%"><tr><td>
 
<table width="70%"><tr><td>
Line 161: Line 161:
   
 
<math>  \nu_{ki}',  \nu_{ki}'' </math> and  <math>  \chi_k </math>  are the forward, the backward stoichiometric coefficient and the chemical symbol of the specie <math>  k </math>, respectively.
 
<math>  \nu_{ki}',  \nu_{ki}'' </math> and  <math>  \chi_k </math>  are the forward, the backward stoichiometric coefficient and the chemical symbol of the specie <math>  k </math>, respectively.
  +
  +
In order to make the notation more clear to those who start learning about the usage of CFD to simulate combustion process, Zel'dovich mechanism for the oxidation of N0 (see https://en.wikipedia.org/wiki/Zeldovich_mechanism or also the book of <ref>  Powers, Joseph. Combustion thermodynamics and dynamics. Cambridge University Press, 2016. </ref>)  is used as an example:
  +
  +
<table width="70%"><tr><td>
  +
<center><math>
  +
  N_2 + O \rightleftharpoons  NO + N
  +
</math></center>
  +
</td><td width="5%"></td></tr></table>
  +
<table width="70%"><tr><td>
  +
<center><math>
  +
N + O_2 \rightleftharpoons NO + O
  +
</math></center>
  +
</td><td width="5%"></td></tr></table>
  +
  +
Based on the above example  the forward <math>  \nu_{ki}' </math> , the backward stoichiometric coefficient <math>  \nu_{ki}'' </math>  and the chemical symbol of the specie k  <math>  \chi_k </math>  can be written as follows:
  +
  +
<table width="70%"><tr><td>
  +
<center><math>
  +
\nu_{ki}' = \begin{pmatrix}1 & 1 & 0 & 0 & 0 \\0 & 0 & 0 & 1 & 1  \\\end{pmatrix},  \nu_{ki}' = \begin{pmatrix}0 & 0 & 1 & 1 & 0 \\0 & 1 & 1 & 0 & 0  \\\end{pmatrix} ,  \chi_k = \begin{pmatrix}N_2 \\ O \\ NO \\ N \\ O_2  \\\end{pmatrix}
  +
</math></center>
   
 
==Evolution of species==
 
==Evolution of species==
Line 169: Line 189:
   
 
==Evolution of the pressure==
 
==Evolution of the pressure==
  +
  +
==References==
  +
<references/>

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