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► CFD Online Site Up Again
  22 Apr, 2021
As you might have noticed the entire CFD Online site has been down since yesterday evening. It is now finally up and running again. I apologize about the down-time.

Before going to bed yesterday I was just going to run a quick OS-update on the servers. I have done this hundreds of times before, without any problems, but this time the virtual KVM-server running CFD Online refused to start.

Virtual servers are fantastic when they work. You can move your site between hardware nodes and it is easy to update things and create failover servers. But when a virtual KVM server does not start it is very frustrating.... your entire server is just a file, which it is difficult to do anything with.

I was unable to get the site up and running yesterday. But after a few hours of sleep I was finally able to get the server to boot today. It required some manual steps in the boot process. However, once the virtual server had come up everything went back to normal, and now it boots automatically when the hardware node is restarted, as it should.

I apologize about the down-time and the frequent re-boots this morning to debug this. But now I think everything works as it should again, and I am not planning any more reboots today.

If you notice anything that is not working as it should please report it here or via email to If the site is down please report it as replies to our Twitter or Facebook pages.
► Question-and-answer based CAPATCHA activated
  21 Mar, 2021
We have had problems recently with bots that automatically register thousands of spam users. Clearly our text-based CAPATCHA system, where a new user has to enter a few distorted characters from an image, has been broken. I have instead today activated a questions-and-answers based CAPATCHA system using a bunch of CFD-related questions that most CFD engineers should have no problems with.

If you have problems to answer one of these CAPATCHA questions please let me know. We should have questions that are difficult to answer for spammers, but easy to answer for anyone interested in CFD.


► 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-v2012 released
    4 Jan, 2021
ESI OpenCFD Ltd. is pleased to announce the release of OpenFOAM-v2012.

The version released in December 2020 brings a lot of exciting new functionality and extension to the existing ones. Let us, among others, highlight a few:

In Meshing:
  • SnappyHexMesh - New thicknessModel allowing more precise y+ control in the first-cell layer
  • SnappyHexMesh - Improved control of gap refinement
  • extrudeMesh - New polyLine extrusion model allows to specify more exiting extrusion path
  • blockMesh - Improved write-vtk command-line option and simplified edge definition

In Numerics:
  • User selectable schemes for high aspect-ratio meshes
  • Lagrangian flow has improved particle tracking on moving meshes
  • MPPIC sub-models have been transferred to kinematic cloud to improve performance and allow interaction with moving meshes
  • Function1 allows setting of a period (more intuitive for slow oscilations)

In Solvers, Physics and Boundary Conditions:
  • New vibro-acoustics solver using finite area model to solve a thin vibrating shell
  • Improved turbulence treatment on the phase interface to reduce spurious velocities for interFoam and interIcoFoam
  • Viscosity models were generalized for easier implementation of new non-newtonian models
  • New buoyancyTurbSource implemented to incorporate effects of buoyancy on turbulence in incompressible and compressible flows
  • New ACMI scaling option can be used to control coupling and blockage behaviour (simple model of a closing valve)
  • Improved outletMappedUniformInlet inlet BC

Many new features and improvements could be found in the post-processing, improved functionality of redistributePar utility.

Compiler configuration and the installation scripts were improved as well.

OpenFOAM is distributed as:
  • Source code
  • Precompiled packages for:
    • Ubuntu
    • RedHat/Fedora/CentOS
    • OpenSUSE
    • Windows 10 Linux Sub-system (Ubuntu)
  • Cross-compiled executables for MS Windows 10
  • Docker container

Please visit release notes to learn more.
► OPenFOAM-v2006 released
    8 Jul, 2020
ESI OpenCFD Ltd. is pleased to announce the release of OpenFOAM-v2006.

The version released in July 2020 brings a lot of exciting new functionality and extension to the existing ones. Let us, among others, highlight a few:

  • blockMesh improvement - faster topological merge
  • New expression version of Function1 and coded PatchFunction1 for time-dependent BCs
  • Improved Arbitrary Mesh Interface (AMI)
  • New OpenQBMM community module
  • New and improved adjoint optimisation tools (e.g. for aeroacoustics applications)
  • New Weber number cloud function object
  • Improved multiphase phase change modelling
  • New pipelined Conjugate Gradient solvers
  • New suite of atmospheric boundary layer tools
  • New momentum error function object
  • New Dynamic Mode Decomposition (DMD) tools

and much more!

You can download OpenFOAM as source code, or precompiled packages for:
  • Windows (docker or cross-compiled native installation or WLS tarball)
  • Linux and Mac docker images

For more information, visit
► New Open-access OpenFOAM Journal
  26 Jun, 2020
For your information, for the following initiation by by these people:

New Open-access OpenFOAM Journal

OpenFOAM Foundation top

► OpenFOAM 8 Released
  22 Jul, 2020
OpenFOAM v8 Released - See Full Announcement

The OpenFOAM Foundation is pleased to announce the release of version 8 of the OpenFOAM open source CFD toolbox. Version 8 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 8 includes the following key developments.
  • Multiphase: selectable interpolation for interface-capturing, PLIC scheme.
  • Reacting multiphase: consolidated multiphaseEulerFoam solver and model development.
  • Transport: new MomentumTransportModels and ThermophysicalTransportModels libraries.
  • Thermophysical: thermodynamics and equation of state models, data input, refactoring.
  • Surface Film: huge performance improvements and better surface handling.
  • Heat transfer: better numerics and case setup, new thermal comfort modelling.
  • Particle tracking: renamed uncoupled solvers, improved tracking efficiency, injection.
  • Other models: transient/steady-state solvers, boundary conditions, reactions.
  • Mesh: improved snappyHexMesh and blockMesh, face centre calculation, cyclic patches.
  • Function Objects: improved visualization/field, residence time and configuration.
  • Case Configuration: new configuration/initialisation tools, coded Function1.
  • Computation: better data I/O, field caching, support for Arm processors.
  • Approximately 710 code commits, 200+ resolved issues
  • ISO/IEC 14882:2011 (C++11): tested for GCC v5.4+, Clang v3.8+, Intel ICC v18.0+.
OpenFOAM 8 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 8 Source Pack can be compiled on suitable Linux platforms.


OpenFOAM 8 was produced by:
  • Core Team (CFD Direct): Henry Weller (co-founder & lead developer); Chris Greenshields (co-founder), Will Bainbridge, Jakub Kníř
  • Developers/Maintainers: Juho Peltola, Timo Niemi, Fabian Schlegel, Ronald Oertel
  • Patch Contributors: Tobias Holzmann, SeongMo Yeon, Mattijs Janssens, Francesco Contino, Bruno Santos, Gerhard Holzinger, Kevin Nordin-Bates, Alberto Passalacqua

OpenFOAM 8 is distributed under the General Public Licence v3 by the OpenFOAM Foundation.

OpenFOAM Other Sources top

► blueCFD-Core 2020-1 has been released
  14 Apr, 2021
Yesterday we at FSD blueCAPE Lda have released blueCFD-Core 2020-1, which provides OpenFOAM 8 as a native build for Windows, with OpenFOAM binaries acting as normal Windows applications.

The installer for blueCFD-Core 2020-1 is installed separately from blueCFD-Core 2017, therefore both installations can coexist.

Released elements are:
The source code provided for the port of OpenFOAM 8 has been released here, as well as of ThirdParty-8 here.
As mentioned above, the development infrastructure is based on MSys2 and instructions for developing in a clean installation of MSys2 will be provided at, as soon as possible.
For a complete list of bug reports, issues and wishes that have been submitted to the blueCFD-Core project, see the Issue Tracker page. For example, a complete list of issues and tasks that were conducted for developping blueCFD-Core 2020-1, are available there: milestone blueCFD-Core 2020-1.

  • FSD blueCAPE is responsible for the development and maintenance of the blueCFD®-Core project.
  • blueCFD® is a registered trade mark of FSD blueCAPE Lda.
  • FSD blueCAPE Lda is an FS Dynamics company.
  • This offering is not approved or endorsed by OpenCFD Limited, producer and distributor of the OpenFOAM software via and owner of the OPENFOAM® and OpenCFD® trade marks.
  • blueCAPE Lda is a contributor to the OpenFOAM Foundation, but the majority of the specific modifications needed in the source code for running OpenFOAM natively on Windows, will not be accepted in the official releases of OpenFOAM by the OpenFOAM Foundation, mostly due to the maintenance overhead associated to supporting closed-source operating systems.

  1. We are very aware that we are already in the year 2021, given that in our numbering convention the version blueCFD-Core 2021 is reserved for OpenFOAM 9, which is estimated to be released sometime around June/July 2021.
  2. We will be publishing more information on how to sponsor the development of blueCFD-Core in the near future, in order to allow us to speed up developments and not be so far behind OpenFOAM Foundation's releases.
► Elmer-OpenFOAM library presentation on a webinar on April 1st
  31 Mar, 2021
Dear OpenFOAM users,

There is an webinar series on Elmer FEM in spring 2021. So far there has been general presentation by the Elmer team and now we are moving to contributed talks.

The next webinar will be given already tomorrow at 14 CET by Juris Vencels, the main developer of EOF library that enables Elmer and OpenFOAM to be linked efficiently via MPI. Good parallel scalability has been demonstrated by the library.

I thought this might be of interest for some OpenFOAM users who otherwise would not be bothered by finite elements. For magnetic field the Hcurl conforming basis functions offer some attractive features.

The webinar is free of charge. You can sign up for it here:

Best regards,

PS. I'm one of the developers of Elmer
► CFD with OpenFOAM online training, training provided by Technical Courses 2021
  25 Feb, 2021
CFD with OpenFOAM course, 60 hours online, 12th March 2021, price is 400€ - Euros

Students will require approximately 60 hours to acquire a intermediate OpenFOAM level and obtain a certificate diploma. Nevertheless, additional material is provided for students who want to spend more than 60 hours and acquire a higher level.

The course is structured as follows:
- 11 theoretical chapters (each chapter includes a text and a videolesson)
- 8 basic exercises (each exercise includes a text and a videotutorial)
- 7 intermediate exercises (each exercise includes a text and a videotutorial).

The whole material (videolessons, exercises and texts) is available from the first day and there is no schedule. Videolessons are recorded. This enables each student to progress according to his learning pace.

More information & registration under:
► 5th GOFUN - German OpenFoam User meetiNg
    8 Dec, 2020
Dear FOAMer,

to follow our tradition we are happy to announce the
5th German OpenFoam User meetiNg -- GOFUN 2021

virtual on 24. March 2021

organized by
silentdynamics, Rostock

Feel free to participate, exchange your ideas, get help and talk to other OpenFOAM users in a pleasant environment.

Participation is free of charge, but registration mandatory.

More information, confirmed speakers, registration and talk submission under

See you online.

Best regards

► OpenFOAM with Salome introductory Online training
  13 Nov, 2020
OpenFOAM with Salome introductory Online training

This course prepares the participants to conduct CFD simulation , CAD → Meshing → Simulations → Post-processing, using the OpenFOAM® and salome.

This training session will take place during the months of November-December 2020.

OpenFOAM® version: the course is based on OpenFOAM® version 2.01. SALOME With Version 7.7.7. User may use higher version

Teaching method: lecture will be conducted using zoom platform 1 hr per day( 4 days per week). 2 hrs per day on Sunday.

Trainer: Dr Sachin Borse has conducted many trainings on openFoam
Training material: few materials like ppt will be provided.

duration of training:- 18 hrs
Internship:- 2 Projects (as per trainer) to Write Paper In Journal. To be Finished within 3 Months
Fees : INR 10000 for Participant from India. USD 250 for participant from other countries.
Contact Details :-
WHATSAPP :- +918149538399
► Dutch OpenFoam users workshops 25th November
    9 Nov, 2020
Dear all,

I would like to make you aware of two OpenFoam workshops at TU Delft organised by DCSE on 25th November :
In the morning, presentations by and for PhD students and young researchers.
In the afternoon, presentations from academia and industry for a greater audience.

The preliminary program of the morning session is:

10:10 - 10:40 Süleyman Karaca (TU Eindhoven), Modelling Reactive Flows with the Flamelet Generated Manifold (FGM)

10:40 - 11:10 Dario Balice (TU Eindhoven), Modelling of Fluidizer Bed Permeability

11:30 - 12:00 Jigar Parekh (University of Groningen), Quantification and Propagation of Model Output form Uncertainties in RANS using Polynomial Chaos

12:00 - 12:30 Håkan Nilsson, Chalmers University of Technology, t.b.a.

OpenFOAM Wiki top


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