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 webmaster@cfd-online.com. If the site is down please report it as replies to our Twitter or Facebook pages.

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.

ESI OpenCFD Ltd. is pleased to announce the release of OpenFOAM-v2106.

The version released in June 2021 brings a lot of exciting new functionality and extension to the existing ones. Let us, among others, highlight a few:

Installation:

• Precompiled packages for Ubuntu, Suse and RedHat
• Docker - New and easy script, options to install "bare bones" executable or everything
• Other installation options as source compilation on Linux and Mac, cross-compiled executables for Windows are also available

Pre-processing:

• Improved snappyHexMesh gap refinement
• Improved splitMeshRegions utility
• Improved checkMesh writing of surface fields

Numerics:

• Improved performance of new AMI area reconstruction calculation

Solvers & physical models:

• New overset solvers
• Improved icoReactingMultiphaseInterFoam solver - includes dynamic mesh
• New solar load model
• New turbulence field estimation
• Improved finite area parallel support

Post-processing:

• New multiFieldValue function object
• Improved momentumError function object
• New Reynolds and Nuselt number cloud function object
• Improved Dynamic Mode Decomposition (DMD) tools

Please visit release notes to learn more.

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 v9 Released - See Full Announcement

The OpenFOAM Foundation is pleased to announce the release of version 9 of the OpenFOAM open source CFD toolbox. Version 9 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 9 includes the following key developments.

• Multiphase: improved the performance, numerics and robustness of multiphase solvers.
• Transport: muticomponent diffusion and the redesign of ThermophysicalTransportModels.
• Thermophysical: automatic compilation of model packages, mixing rules, tabulated input.
• Heat transfer: made calculations consistent between solvers, BCs and post-processing.
• Particle tracking: cloud types selected by user, not hard-coded into solvers.
• Reactions: improved robustness of numerics and chemistry and added general controls.
• Mesh: refactored parts of snappyHexMesh, decomposition and manipulation tools.
• Surface Film: introduced standard thermophysical modelling.
• Function Objects: overhaul of packaged function objects for improved usability.
• Models and Constraints: fvOptions replaced by more flexible fvModels and fvConstraints.
• Case Configuration: enhanced scripts and added new Function2 functions of 2 variables.
• Computation: improved robustness and performance of I/O, compilation, numerics.
• Approximately 750 code commits, 200+ resolved issues.
• ISO/IEC 14882:2011 (C++14): tested for GCC v5.4+, Clang v10+ (v4+ should also work).

OpenFOAM 9 is packaged for the following platforms, with ParaView 5.6 including Mesa with LLVM/Gallium acceleration for systems without a (supported) graphics card:

• Ubuntu Linux: packaged installation for Ubuntu 18.04 20.04 and 21.04;
• Other Linux: installation with a Docker container; or compilation from source code;
• Windows 10: installation using Windows Subsystem for Linux with Ubuntu packs;
• macOS: installation with a Docker container.

The OpenFOAM 9 Source Pack can be compiled on suitable Linux platforms.

Credits

OpenFOAM 9 was produced by:

• Core Team (CFD Direct): Henry Weller (co-founder & lead developer); Chris Greenshields (co-founder), Will Bainbridge.
• Developers/Maintainers: Juho Peltola, Timo Niemi, Fabian Schlegel, Ronald Oertel, Jakub Kníř.
• Patch Contributors: Francesco Contino

Licence

OpenFOAM 9 is distributed under the General Public Licence v3 by the OpenFOAM Foundation.

Hello all!

The 16th OpenFOAM Workshop starts today online. You can still register at https://abbey.eventsair.com/16th-ope...e-registration.

The website (https://www.ucd.ie/openfoam2021) contains links to the agenda and the book of abstracts.

All talks will be recorded and made available on the online platform.

See you there,
Philip

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:

• blueCFD-Core-2020-1-win64-setup.exe
  • blueCFD-Core 2020-1 provides MSys2, OpenFOAM 8 and ParaView 5.6.2.
  • 830 MiB installer, SHA1: 31c78a935309ece053035e4d2a81ebac5f766c43
• The Release Notes for blueCFD-Core 2020-1 page has been created for this release.
• The Project Management page is public, allowing people to know how things are coming along and what are the upcoming objectives for 2021.
• A wiki is available for software developers and system installers: blueCFD-Core wiki

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 openfoamwiki.net, 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.


Disclaimers:

• 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 www.openfoam.com 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.

Addendum:

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.

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:
https://ssl.eventilla.com/event/ng1zO

Best regards,
Peter

PS. I'm one of the developers of Elmer

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: http://www.technicalcourses.net/port...php?curso_id=8

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

http://www.foamacademy.com/gofun-en

See you online.

Best regards

Johann

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 :-
sachinlb@yahoo.co.uk
WHATSAPP :- +918149538399

'''Welcome to ''OpenFOAMWiki''!'''
We hope you will contribute much and well.
You will probably want to read the [[https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents|help pages]].
Again, welcome and have fun! [[User:Bgschaid|Bgschaid]] ([[User talk:Bgschaid|talk]]) 13:55, 20 July 2021 (CEST)

I am a graduate student majored in energy and thermal engineering and currently studying flame behaviours under extreme conditions in mesoscale combustors, simulations and numerical approches are needed to gain supplemental data for experiments in quantitative analysis. OpenFOAM provides a wide and diverse variety of tools for the realization of user-defined functions, hence is perferable to commercial CFD softwares.