Something broke during a live-cloning of the virtual server running CFD Online on Sunday night. I am not sure what happened.The site has been down during a large part of Sunday.

I was able to start the cloned virtual server on a backup server though. The CFD Online site is now up and running again, but on a backup server. I hope no data was lost, but if you miss something that you posted during Sunday it might be due to this.

I will try to live-clone the virtual server running CFD Online back to the production server and start it there again. The production server is a bit faster.

New version of OpenFOAM-v2412

OpenCFD is pleased to announce the December 2024 release of OpenFOAM® v2412. This release extends OpenFOAM-v2406 features across many areas of the code. The new functionality represents development sponsored by OpenCFD's customers, internally funded developments, and integration of features and changes from the OpenFOAM community.


Full information about the release can be found at https://www.openfoam.com/news/main-news/openfoam-v2412

Among the new developments you will find:

Pre-processing

• Improved createPatch utility
• Improved snappyHexMesh: buffer layers before snapping

Boundary conditions

• Improved pointMesh boundary handling
• New point patch functionality

Numerics

• New fused discretisation
• New GAMG agglomeration caching
• Improved lduMatrix, lduAddressing
• Improved wall distance
• Community contribution: Improved adjoint optimisation
• New zoneBlended scheme

Solvers and physical models

• Community contribution: Improved shielding function for SA-DDES turbulence model
• Improved Lagrangian injection model: coneNozzleInjection
• Improved solid-body motion function: tabulated6DoFMotion
• New finite-area framework: Film-separation models
• Improved simpleFoam: new dynamicMesh support

Parallel

• Improved Non-Blocking Exchange (NBX) .
• Improved finite-area framework
• Improved reconstructParMesh
• Improved distributed tri-surfaces

Post-processing

• New report generation
• New graph generation
• New finite-area function object: surfaceCourantNumber
• Improved solver function objects: Outer-loop convergence check

A big Thanks to all people who contributed to OpenFOAM.

In addition to source code packages suitable for compilation on a variety of Linux and other POSIX systems, this release also has a number of pre-compiled binary packages for Linux and MS Windows.

Documentation and link to installation guides as well as packages and source code can be found on https://openfoam.com.

OpenFOAM v13 Released - See Full Announcement

The OpenFOAM Foundation is pleased to announce the release of version 13 of the OpenFOAM open source CFD toolbox, produced by CFD Direct. Version 13 includes: a rewrite of mesh zones which can dynamically update and are easier to use and more robust (replacing the lousy topoSet): field-based Lagrangian, a 65% complete, more flexible, extensible and efficient replacement to the existing code; improvements to MULES to guarantee boundedness and accelerate solutions, e.g. in multiphase flows; a rewrite of mass transfer modelling; better visualisation with ParaView working on decomposed cases, foamVTKSeries for animations and improved foamMonitor; several improvements and additions for multi-region simulations, case configuration, meshing, function objects, multiphase flows and combustion.

OpenFOAM 13 includes the following highlights.

• Modular Solvers: include deactivating flow, thermophysics and models switches.
• MULES: guarantees boundedness irrespective of iterator convergence.
• Multiphase: significantly accelerated simulations with the multiphaseEuler solver.
• Transport/Thermo: rewritten mass transfer modelling for the multiphaseEuler solver.
• Combustion: improved ignition and flame model for simulation of engines.
• Particles: 65% complete field-based Lagrangian is more flexible, extensible, efficient, …
• Meshes: upgraded mesh generation and coupling of multiple mesh regions.
• Mesh Zones: robust, usable, flexible, and more functional replacement.
• Multi-region Simulation: improved NCC and mesh stitching and mapping.
• Function Objects: improved scalarTransport, add power, reaction rate, cutLayerAverage.
• Models: added propellerDisk models and improved fvFieldSource.
• Boundary Conditions: improved pressure, temperature and mass diffusion conditions.
• Case Configuration: new foamMergeCase tool.
• Visualisation: ParaView can read decomposed cases, foamVTKSeries for animations.
• Cases: new examples for single phase, multiphase, incompressible and compressible flows.
• Other: The foamNewApp script can create starter code for a non-CFD application.
• ~832 code commits, ~150 resolved issues.
• ISO/IEC 14882:2011 (C++14): tested for GCC v5.5+, Clang v16+ (v10+ should also work).

OpenFOAM 13 is packaged for the following platforms:

• Ubuntu Linux: packaged installation for Ubuntu 22.04, 24.04 and 25.04;
• Windows: installation using Windows Subsystem for Linux with Ubuntu packs;
• macOS: installation using Canonical Multipass with Ubuntu packs.

The OpenFOAM 13 Source Pack can be compiled on suitable Linux platforms.

Credits

OpenFOAM 13 was produced by CFD Direct: Henry Weller, Will Bainbridge, Chris Greenshields and Aidan Wimshurst.
With contributions from Stanislau Stasheuski, Clemens Gößnitzer, Ronald Lehnigk, Timo Niemi and Mahmoud Gadalla.

Licence

OpenFOAM 13 is distributed under the General Public Licence v3 by the OpenFOAM Foundation.

Dear Foamers,

We are pleased to announce that the next French/Belgian OpenFOAM users conference will take place in Bordeaux on June 3-4, 2026.

NEW: the conference will be followed by a day dedicated to training and mutual support on June 5.
Don't miss out on this unique opportunity to learn and connect!

We will update this thread when registration and call for contributions open, stay tuned for more details!

Yann, on behalf of the organizing committee

😎 We are pleased to announce our collaboration with Tonkomo, LLC to deliver an advanced training module on OpenFOAM and general CFD, titled 'Overview of Chemical Processes and Combustion.' This initiative reflects our shared commitment to providing high-quality, technically rigorous education in multiphysics simulation.

The next training session will take place on:

October 20, 22 and 24 (M, W, F)
9am-12:30pm PST = 9am-1:30pm MST = 18h-2130h CET (Italy time)

We are offering a 20% discount if you register before October 10, 2025. So hurry up and book your seat. 🫡

👉 To register:
http://bit.ly/4g8Gflr

👉 Course description:
http://bit.ly/4mRfgO5

For more information send an email to guerrero@wolfdynamics.com.

To complement this session, we are pleased to offer a concise short course (approximately three hours) focused on turbulence modeling, heat transfer, and the finite volume method. Further details regarding the schedule and delivery format, whether prerecorded or live online—will be provided shortly.

You can find the training material at the following link:
http://bit.ly/4n0Jgab

The OpenFOAM regulars' table (Stammtisch) is an informal meeting of OpenFOAM users and CFD enthusiasts. It is intended to provide a platform for networking and exchange and will be organised this year in Göttingen at NHR-Nord@Göttingen.

After the successful restart earlier this year, the next meeting will take place on 14 Apr 2026, 18:00 to 15 Apr 2026, 17:00. On the first day, an informal dinner is planned to get to know each other (self-paying). The second day is the main day of the Stammtisch and will feature many exciting presentations, a guided tour of the GWDG HPC cluster and two special sessions: ‘Bring your problem’ and ‘Find your employer’. The provisional programme can be found here. .

Participation is free of charge on both days, but registration is required as seating is limited. You can also submit your contributions via the registration page. These can be presentations, potential employers and issues to be discussed under "Bring your problem". For further questions and to register, please contact our organisation team.

Further information and registration details can be found on link.

Join Inductiva’s free webinar to learn how we’re leveraging cloud-based HPC to scale OpenFOAM workloads. Whether you're working on CFD, turbulence modeling, or multiphase flows, this is a great opportunity to see how high-performance computing can accelerate your simulations.

🎥 Join the webinar: https://lu.ma/5xd26unj

The OpenFOAM regulars' table (Stammtisch) is an informal meeting of OpenFOAM users and CFD enthusiasts. It is intended to provide a platform for networking and exchange and will be organised this year in Göttingen at NHR-Nord@Göttingen.

The meeting will take place on 1 and 2 April 2025. On the first day, an informal dinner is planned to get to know each other (self-paying). The second day is the main day of the Stammtisch and will feature many exciting presentations, a guided tour of the GWDG HPC cluster and two special sessions: ‘Bring your problem’ and ‘Find your employer’ (see description below). The provisional programme can be found in the following agenda.

Participation is free of charge on both days, but registration is required as seating is limited. You can also submit your contributions via the registration page. These can be presentations, potential employers and issues to be discussed. For further questions and to register, please contact our organisation team.

Further information and registration details can be found on link.


Best Regards,
Henrik, Patrick and Sergey

Dear foamers,

If you are interested in Numerical Wave Tanks developed in OpenFOAM and applied to coastal and offshore engineering, please consider submitting your work to this invited session (IS03) in the Marine Conference (2025).

https://marine2025.cimne.com/event/a...e-000c29ddfc0c

The XI Conference on Computational Methods in Marine Engineering (Marine 2025) that will be held in Edinburgh, Scotland, on 23-27 June 2025.
The deadline for submitting is the 20th January 2025.

The objective of Marine 2025 is to be a meeting place for researchers developing computational methods relevant to any marine engineering application, as well as for experimentalists willing to share their understanding of the flow physics and data.