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CFD Online top

► CFD Online on Mastodon
  19 Dec, 2022
We are now up on Mastodon. You can find CFD Online here:

https://mas.to/@cfdonline

If you already are on Mastodon you can reach our page at @cfdonline@mas.to

We will publish important announcement related to our website services both on Mastodon and Twitter. If you have problems to reach CFD Online you should first check us on Mastodon to see if this is a general problem. Frequent CFD Online users are advised to follow us on Mastodon.
► Users banned and posts deleted by mistake
  23 Sep, 2022
By mistake one of our moderators yesterday happened to ban about 5 legitimate users and deleted all of their posts. Fortunately it was possible to solve this quite quickly and I have now restored the deleted posts and removed the incorrect bans.

If someone is still missing their posts, or have been banned incorrectly from the forums, please let me know asap. You can send me a private message here on the forum or email to webmaster@cfd-online.com.

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-v2206 released
  28 Jun, 2022
New version of OpenFOAM-v2206

OpenCFD is pleased to announce the June 2022 release of OpenFOAM® v2206. This release extends OpenFOAM-v2112 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.

Among the new features users may find:

Pre-processing
  • snappyHexMesh improvements and optimisations
  • Improved createPatch utility
  • New setTurbulenceFields pre-processing utility

Numerics
  • Community contribution: New adjoint to k-omega SST model
  • Community contribution: updated adjoint optimisation
  • Improved QR decomposition algorithm
  • Improved semi-implicit sources

Solvers and physical models
  • New solid body mesh motion
  • New Reynolds-stress turbulence model: EBRSM
  • Improved wall functions
  • New tabulated anisotropic thermal conductivity solid transport

Boundary conditions
  • Improved turbulent digital filter condition
  • New outlet-mapped inlet condition
  • New specie adsoption conditions

Post-processing
  • Improved probes function object
  • Improved sampled surfaces
  • Improved runTimeControl function object
  • Improved Dynamic Mode Decomposition (DMD) tools



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.
  • Ubuntu Linux: packaged installation for Ubuntu 22.04 (LTS), 20.04 (LTS), 18.04 (LTS)
  • openSUSE Linux: packaged installation for Leap15.4, Leap15.3, Leap15.2
  • Redhat Linux variants: packaged installation for CentOS/Rocky 9, 8, 7 and Fedora 36, 35, ...

MS Windows users can use these packages and install them to Windows Subsystem for Linux or into a Linux container in Docker. Another possibility is to install cross-compiled executables directly to MS Windows.

Mac OSX users have to compile the source code using Clang compiler.

Full information about the release can be found at https://www.openfoam.com/news/main-news/openfoam-v2206

OpenFOAM Foundation top

► OpenFOAM v10 Released
  12 Jul, 2022
OpenFOAM v10 Released - See Full Announcement

The OpenFOAM Foundation is pleased to announce the release of version 10 of the OpenFOAM open source CFD toolbox. Version 10 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 10 includes the following key developments.
  • Multiphase: added models and improved performance / robustness of multiphase solvers.
  • Transport: properties consolidated into a single physicalProperties file.
  • Thermophysical: improved handling of conductivity and added documentation.
  • Heat transfer: improved thermal coupling in conjugate heat transfer.
  • Particle tracking: can now be plugged into any solver using the clouds fvModel.
  • Reactions: chemistry now solve for mass fractions to account for thermal expansion.
  • Parallelisation: new framework for load-balancing, decomposition and redistribution.
  • Mesh: general improvements to snappyHexMesh, blockMesh and other tools
  • Dynamic Mesh: non-conformal coupling (NCC) for rotating geometry, to replace AMI.
  • Dynamic Re-meshing: mesh-to-mesh mapping for mesh motion including engines.
  • Function Objects: more efficient output for sampling, and new field calculations.
  • Models and Constraints: now work for moving mesh cases and with function objects.
  • Boundary Conditions: new general conditions of pressure, velocity and temperature.
  • Case Configuration: created userTime to provide a customised measure of time.
  • Computation: improvements to distance-to-wall calculations, time handling and I/O.
  • Approximately 635 code commits, 161 resolved issues.
  • ISO/IEC 14882:2011 (C++14): tested for GCC v5.4+, Clang v10+ (v4+ should also work).
OpenFOAM 10 is packaged for the following platforms, with ParaView 5.6 including Mesa with LLVM/Gallium acceleration for systems without a (supported) graphics card:
The OpenFOAM 10 Source Pack can be compiled on suitable Linux platforms.

Credits

OpenFOAM 10 was produced by:
Licence

OpenFOAM 10 is distributed under the General Public Licence v3 by the OpenFOAM Foundation.

OpenFOAM Other Sources top

► 6th French/Belgian OpenFOAM user conference, June 13-14th 2023, Grenoble (FRANCE)
  25 Jan, 2023
Dear all,

The 6th French/Belgian OpenFOAM users conference will be held in Grenoble, France, on June 13 and 14th 2023.

Whether you are a new user or an experienced one, this is a good opportunity to share your experience, struggles and achievements with the community in a friendly atmosphere.

Call for contributions and registration are currently open.
To keep things simple, contributors are only asked to submit a presentation title. Contributions are selected on a first-come, first-served basis so do not hesitate to submit a title now if you want to be sure to get a slot.

Important dates:
  • March 15 2023: end of early bird registration
  • June 13-14 2023: conference

More information: https://www.foam-u.fr/

Save the date!
Yann, on behalf of the organizing committee
► preCICE Workshop 2023
  24 Jan, 2023
The 4th workshop of the open-source coupling library preCICE is around the corner: February 13-16, 2023, in Munich (limited places, registration closing soon).

This may be particularly interesting for people working on complex multi-physics simulations, such as fluid-structure interaction, conjugate heat transfer, and a wide range of other problems that need more than one simulation code (e.g., coupling OpenFOAM to your in-house code). The workshop includes training courses, talks, hands-on user support sessions, and a lot of interaction between participants.

Read more on https://precice.org/precice-workshop-2023.html

P.S.: While preCICE is not specific to OpenFOAM, most of the users seem to be interested in coupling some in-house or other open-source code to OpenFOAM, so I thought it would be fitting to post it in this category.
► CFD with OpenFOAM online training, training provided by Technical Courses 2023
  11 Jan, 2023
CFD with OpenFOAM course, 60 hours online, 10th February 2023, 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
► OpenFOAM Workshop 2023
    8 Oct, 2022
The OpenFOAM Workshop 2023 website is finally online.

https://openfoamworkshop.org/

Save the date!

More information is coming soon.


#OFW18
► Permafrost modelling with OpenFOAM : the permaFoam solver
  26 Sep, 2022
Dear FOAMers,


It is my pleasure to announce the recent publication of an updated version of the permaFoam solver, the OpenFOAM solver for permafrost modelling. You can find the related paper published in Computer Physics Communications below :
https://www.sciencedirect.com/scienc...600?via%3Dihub
High Performance Computing capabilities are studied up to 16 kCores on supercomputers of CALMIP and TGCC. Examples of applications are also presented. One can find the latest updates of the permaFoam solver on the community repository:
https://develop.openfoam.com/Community/hydrology/


All the best,


Laurent Orgogozo
University of Toulouse
► foam-extend-5.0 release
  20 Sep, 2022
Announcing foam-extend-5.0 Official Release


This is a major release of foam-extend-5.0 created from the nextRelease branch of foam-extend-4.1 which consolidates cumulative development since 14 October 2019. In total, the release consists of 5535 commits since the last release.
Pre-packaged binaries are produced for
- Ubuntu 20.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 18.04 LTS
Microsoft Windows compilation follows the Windows Power Shell Ubuntu sub-system.



Visit https://foam-extend.org for more information.



Major new features:

* Physics modelling

* Proper Orthogonal Decomposition (POD) model development across a number of applications with tutorials and validation cases. POD uses the Method of Snapshots to create energy-consistent reduced order models which run 1000s of times faster than full CFD. POD analysis is also used to examine stability characteristics of flow regimes or to assemble "digital twin"-type models. POD has been deployed across a number of applications, with new tutorials.

* Extension to porous zone models for thermal modelling and heat transfer, including implicit coupled conjugate heat transfer

* Physics modelling updates for coal combustion

* Handling of derived forms of enthalpy in thermophysical models with correct boundary condition setup (coupled interfaces)


* Numerics


* Immersed Boundary (Surface) method: major improvements. Consistency errors in parallel cutting and interaction with coupled boundaries have been resolved. Further type-consistent boundary conditions on IB surfaces have been adeed, with correct mapping and post-processing. Major robustness improvements in the method. Algorithmic improvements in immersed boundary handling; cutting, dead cells, extended sets of boundary conditions. Rewrite of cut cell handling, parallelism and consistency updates.

* Immersed boundary with interfering patches: multiple intersections

* Updated algorithms for buoyant flows: correct limit of incompressibility and consistent handling of stratified flows. Solvers represent incompressible results for canonical flows without instability

* Consistency updates for Multiple Rotating Frames (MRF) of reference, with accurate geometry handling. Consistent and convergent integration with block pressure-velocity solvers

* Algorithmic updates for steady compressible turbomachinery flows. New implementation of rothalpy handling with better consistency in rothalpy jump coupled boundary conditions

* Use of block-AMG solvers for block-coupled p-U solvers: see tutorials

* Updated handling of bounded flux boundary conditions

* New 01 bounded convection schemes

* Better reporting of flux check

* Updated algorithms for partial overlap GGI interface pairs

* Change in handling of adjustPhi for moving deforming meshes


* HPC and parallelism, performance improvements

* Major improvement in handling of processor boundaries and other cached coupled interface patch types. This resolves long-standing bugs in FOAM-OpenFOAM development lines and results in significant reduction in number of iterations of linear solvers. Further, numerous stability and consistency problems in parallel execution have been resolved

* Improvements for large memory usage in large-scale HPC cases

* Incremental consistency work on block-coupled solvers for incompressible flows

* Incremental improvement in performance for parallel Oveset Mesh capability. Update in low-level communication and consistency

* Clean-up of boundary condition updates in absence of database field access


* Dynamic Mesh


* Full deployment of dynamic load balancing with AMR or other dynamic mesh features at the level of topoChangerDynamicFvMesh

* Refactoring of dynamic mesh solvers with algoritmic efficiency improvements

* Changes in dynamic mesh handling: efficient and consistent geometry updates


Software engineering

* Port to gcc-9 and gcc-11
* c++-11 updates: default destructors, delete automatically generated
* update of the build system using native third party packages whenever possible
* Change in style to FatalErrorInFunction sytnax
* new VectorN types for extended coupling in block matrices


Happy FOAM-ing,


Hrvoje Jasak
Wikki Ltd.

OpenFOAM Wiki top

► User:Nchowlett
    2 Feb, 2023

User account Nchowlett was created by Bgschaid

► User talk:Nchowlett
    2 Feb, 2023

Welcome!

New page

'''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]]) 11:13, 2 February 2023 (UTC)
► User:Nchowlett
    2 Feb, 2023

Creating user page for new user.

New page

Novice researcher in the area looking to apply CFD to atypical engineering fields, mainly medicine/health-related. Previous research looked at understanding, and moreover modifying, the internal fluid flow (in a cylindrical container) driven by an impeller, with application possibly in biotechnology field. Open to collaboration with university researchers and students interested in health-related computational science.
► User:SaltyFish
  30 Jan, 2023

@pump_upp - best crypto pumps on telegram !

← Older revision Revision as of 23:32, 29 January 2023
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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.
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