Our aggregated RSS/Atom based CFD feeds are now working again. You can find them here:

https://www.cfd-online.com/Feeds/

Following these feeds is the quickest way to catch-up on the most recent CFD blogs, news, jobs, vendors and journals.

Here are direct links to the different Feed sections:

• News: https://www.cfd-online.com/Feeds/news.php
• Blogs: https://www.cfd-online.com/Feeds/blogs.php
• Vendors: https://www.cfd-online.com/Feeds/vendors.php
• Jobs: https://www.cfd-online.com/Feeds/jobs.php
• Journals: https://www.cfd-online.com/Feeds/jobs.php

These feeds have been off-line for almost a month. The feeds were originally based on the Google Feed API service, which was discontinued by Google on Dec 31, 2016. We have now implemented our own RSS aggregator and cache system and we are now not dependent on any external service. Some of the original sources are not working with our new system though, and they have been removed. We are not sure why some of them are not working as before.

If you have any suggestion on other RSS sources to add to these feeds please let us know by responding to this post or sending an email to webmaster@cfd-online.com.

Our Feeds services are currently off-line. This section was based on the Google Feeds API, a service that was discontinued and disabled by Google on Dec 15, 2016. We are investigating other ways to generate the Feeds.

We have just finished the traffic statistics for 2016 for CFD Online. The About section has been updated to reflect the developments in 2016.

2016 was a very successful year for CFD Online. We had a fantastic growth in traffic and for the first year ever CFD Online on average delivered more than 2.5 million web-pages per month to our visitors! Both the number of read web pages and the number of unique visitors (IP addresses) reached new record levels. The number of read web-pages increased by 39% and the number of unique visitors increased by 13% compared to the previous year. This is the strongest growth in traffic that we have ever had.


The bar chart above shows the 12-month trailing average of the number of web pages delivered from CFD Online per month over the last 18 years. More details about the traffic can be found in the most recent web-server statistics or in the statistics for 2016.

We have just released new versions of the forum apps for Android and iPhone / iPad / iOS.

It is necessary to update to these new versions since we have now we switched to encrypted SSL/https based communication. These apps have several new features, an improved GUI and many bug-fixes.

The apps are free and can be found here:

Android: https://play.google.com/store/apps/d...nlinecomForums

iPhone/iPad/iOS: https://itunes.apple.com/us/app/cfd-...936248777?mt=8

Use these apps to follow the forums also when you are on the move.

Today we have switched over the entire www.cfd-online.com site to encrypted SSL using the https protocol. All old pages starting with http:// should now automatically be forwarded to an encrypted https:// address instead.

This increases security and makes it impossible for people to eavesdrop on your communication with cfd-online.com.

I hope that we have managed to change everything on our site from http: to https:. If you notice anything broken please let me know.

Since late Friday it has not been possible for normal users to post new threads on the forums. For some reason it worked well for moderators, so we didn't notice this problem until we started getting emails about it.

The problem has now been solved and I hope that it should now work well for all registered users to post new threads. It was an unused forum plugin that for some reason after a software update started to give server errors.

ESI-OpenCFD has been continuing its work on improving post-processing.

Working together with Kitware, the VTK-native OpenFOAM reader in the freshly released ParaView 5.3.0 now includes full support of 32-bit and 64-bit binary formats, better coverage of the Lagrangian formats, and the option to skip the initial conditions directory. https://blog.kitware.com/paraview-5-3-0-release-notes/ This release also includes essential improvements for parsing STL ASCII files. (https://gitlab.kitware.com/vtk/vtk/merge_requests/2357).

At the same time, the OpenFOAM plugins for ParaView have been updated in our development line (for the upcoming 1706 release in June) to work with all recent ParaView versions. The blockMesh reader now also includes support for displaying the patch names, which allows better visualization of a blockMesh. (https://develop.openfoam.com/Develop...hics/PVReaders)

Note that the ParaView plugins supplied with OpenFOAM are now versioned according to the ParaView major version, which makes it possible to easily switch between different ParaView versions without conflicts.

Comprehensive Public Training Schedule for 2017 is now available. Please see our Website http://www.openfoam.com/training/schedule.php

**BOOK YOUR PLACE NOW to avoid dissapointment**

23-27 January in London

20-24 February in Munich

31 Feb - 3 March in Austin, Texas (USA)

13 - 17 March in Bologna

14 - 17 March in Boston, MA (USA)

and other locations.

OpenFOAM® Training OpenCFD deliver OpenFOAM® Foundation and Advanced training courses. Each course is of 2 days duration and is delivered by OpenCFD staff with exceptional experience in OpenFOAM® . VisualCFD is a 1 day course run at European Locations. Training Locations worldwide, we also provide on-site why not contact us for a proposal today.

OpenCFD is pleased to announce the December release of OpenFOAM-v1612+ released on 23rd of December 2016.

OpenFOAM+ uses the OpenFOAM Foundation version as a common code base. It contains wider functionality and platform support, including Linux, Windows and Mac utilising Docker. This release includes many enhancements in boundary layers, parallel processing, physical models and other areas.

Its purpose is to accelerate the public availability of new features which are sponsored by OpenCFD’s customers and contributed by the OpenFOAM community.

Please see the release notes http://www.openfoam.com/version-v1612+

Please follow the download instructions in http://www.openfoam.com/download/installation.php for binary installation using Docker for Windows, Mac and Linux or source code compilation.

OpenCFD is pleased to announce the June release of OpenFOAM-v1606+.
OpenFOAM+ uses the OpenFOAM Foundation version as a common code base. It contains wider functionality and platform support, including Linux, Windows and Mac. Its purpose is to accelerate the public availability of new features which are sponsored by OpenCFD’s customers and contributed by the OpenFOAM community. Please see the release notes http://www.openfoam.com/download/ Please follow the download instructions in http://www.openfoam.com/download/installation.php

Comprehensive Public Training Schedule for 2016 is now available. Please see our Website www.openfoam.com/training **BOOK YOUR PLACE NOW to avoid dissapointment** for Munich 11-15 July, Houston 29 August - 1 September, Vienna 12-16 September OpenFOAM® Training OpenCFD deliver OpenFOAM® Foundation and Advanced training courses. Each course is of 2 days duration and is delivered by OpenCFD staff with exceptional experience in OpenFOAM® . VisualCFD is a 1 day course run at European Locations. Training Locations worldwide, we also provide on-site why not contact us for a proposal today.

The packaged distributions of OpenFOAM for Ubuntu 14.04LTS can now be installed directly on Microsoft Windows 10 using Bash on Ubuntu on Windows.

See OpenFOAM for Windows 10 for installation details.

Bash on Ubuntu on Windows provides a full compatibility layer for running Linux applications on Windows through the Windows Subsystem for Linux (WSL), which performs real-time translation of Linux system calls into Windows OS system calls. The system can support graphical Linux applications, such as the version of ParaView that includes the OpenFOAM reader module, with additional X server software. Running OpenFOAM applications in parallel using WSL is reported to work effectively.

The OpenFOAM Foundation is pleased to announce the release of version 4.1 of the OpenFOAM open source CFD toolbox. Version 4.1 is a patch release of version 4.0 with approximately 50 commits that fix critical issues, improve usability and consistency in the code. As a patch release, we strongly recommend users of v4.0 upgrade to this version; users of the packaged version for Ubuntu (openfoam4) can receive 4.1 as part of a system upgrade.
OpenFOAM 4.1 is distributed under the General Public Licence by the OpenFOAM Foundation as:

• packaged installation for Ubuntu Linux, recommended for general use including virtual machines, e.g. running on Windows;
• source code for compilation on other Linux systems.

For full details, see the OpenFOAM 4.1 Release Announcement.

Thanks to the OpenFOAM enthusiasts who have contributed to a better code through the bug reporting system.

To download OpenFOAM 4.1, click here.

The openfoam-dev pack provides a packaged installation for Ubuntu of the current development line of OpenFOAM, known as OpenFOAM-dev, that contains the source code for the next major release of OpenFOAM. The pack is updated weekly to bring cutting-edge developments to users without them needing to compile source code. Updates can conveniently be installed as part of a standard update within the apt package management tool.

The openfoam-dev pack works with the version of ParaView provided within the latest packaged version release of OpenFOAM — currently v4 (openfoam4) which installs the paraviewopenfoam50 pack. It is available for the following versions of Ubuntu Linux 64bit only:

• 14.04 LTS, codename trusty
• 16.04 LTS, codename xenial

To install the openfoam-dev pack, go to:
http://openfoam.org/download/dev-ubuntu

The OpenFOAM Foundation is pleased to announce the release of version 4.0 of the OpenFOAM open source CFD toolbox. Version 4.0 increases CFD productivity by significant improvements and changes to general usability, post-processing, case management and software management. It provides a solid platform for the future, sustainable development of OpenFOAM through reimplementation of core and major libraries, over 120 bug fixes and much better consistency, robustness and performance. It is packed with numerous new and improved boundary conditions, new rigid body dynamics libraries, and developments in turbulence and transport modelling, meshing, ACMI and multiphase, reacting flow.

OpenFOAM 4.0 is distributed under the General Public Licence by the OpenFOAM Foundation as:

• packaged installation for Ubuntu Linux, recommended for general use including virtual machines, e.g. running on Windows;
• source code for compilation on other Linux systems.

Case Management

• Case Control command line interface (CLI): new foamDictionary utility for printing, modifying and adding new dictionary entries from the command line » more », see OpenFOAM User Guide, Section 4.6.
• foamListTimes: lists time directories for a case, without the 0 directory by default; the -rm option deletes the listed directories so foamListTimes -rm cleans a case directory.
• foamSearch: helps users find examples of case settings quickly, by searching a directory for dictionary files of a particular name and extracting entries of a particular keyword, sorted into a unique list. » more »
• Tutorials: moved all Allrun scripts within their own case or “tutorial” directory for consistency, including the cavity and damBreak cases from the tutorials. » more »

Post-processing and run-time-processing

• Post-Processing CLI: unified set of tools which simplifies post-processing considerably, improves functionality and maintainability, supported by new documentation — making obsolete the inconsistent, unmaintainable, often-duplicated functionality dispersed across utility applications, function objects, tutorial files and tools such as foamCalc and execFlowFunctionObjects, see OpenFOAM User Guide, Section 6.2.
• postProcess utility: general and flexible CLI that replaces foamCalc and postCalc » more » and field processing utilities such as Co, createTurbulenceFields (now turbulenceFields), enstrophy, Lambda2, Mach, patchAverage, patchIntegrate, Pe, probeLocations, ptot, Q, R, sample, wallShearStress and yPlus.
• ParaView: upgraded to version 5.0.1, whose VTK is rewritten to support OpenGL2 rendering. » more »
• Graphs and sampling : functionality is simplified, more compatible with the foamMonitor monitoring tool, and more robust (» more », » more ») see OpenFOAM User Guide, Section 6.3.
• Function objects: redesigned and rewritten the underlying code structure, simplifying the code, reducing duplication and making it easier to develop and use » more »; refactored several function objects, e.g. writeObjects (formerly writeRegisteredObject » more »), scalarTransport, with support for steady-state solution (» more »), fieldAverage, with redesigned restart options (» more »); added new function objects, e.g. icoUncoupledKinematicCloud (» more »), writeVTK (» more ») and histogram. (» more »).

Boundary Conditions

• noSlip: more robust, convenient alternative to fixedValue with value uniform (0 0 0); » more »
• extrapolatedCalculatedFvPatchField: calculates patch values by zero gradient extrapolation; robust replacement for zeroGradient for temporary fields, to avoid risks associated with derived fields inheriting zeroGradient. » more »
• fixedProfile: applies a specified 1D profile at an inlet, e.g. obtained from experimental data. » more »
• plenumPressure: calculates pressure based on a zero-dimensional model of an enclosed volume of gas upstream of an inlet. » more »
• fixedFluxExtrapolatedPressure: extrapolated pressure boundary conditions for impinging flows, extrapolated inlet conditions with body-forces, highly viscous flows and pressure-induced separation. » more »
• prghTotalHydrostaticPressure: uses the hydrostatic pressure field as the reference state for the far-field which provides much more accurate entrainment for large domains, e.g. in fireFoam. » more »
• SRFWallVelocity: velocity condition on walls with the single rotating frame (SRF) model. » more »
• Time-varying boundary conditions: replaced DataEntry with Function1 for run-time selectable “unary” functions, i.e. functions of 1 variable, e.g. time » more »; in addition to existing tabulated and polynomial functions, added Sine (» more ») and Square (» more ») wave functions, with oscillatingFixedValue being replaced by uniformFixedValue with a Sine function. » more »
• flowRateInletVelocity: new option to extrapolate the velocity profile back to the inlet. » more »
• totalPressureFvPatchScalarField (and uniformTotalPressureFvPatchScalarField) : improved usability. » more »
• Note: calculated boundary conditions now requires a value entry to avoid problems with non-initialization. » more »

Rigid Body Dynamics

• rigidBodyDynamics: new library for the dynamics of n-degrees of freedom (n-DoF) articulated bodies in parallel. » more »
• rigidBodyMeshMotion: new library for the mesh-motion of multiple articulated rigid-bodies with joints, restraints and external forces. » more »
• Vector algebra: redesigned to support for spatial vector algebra. » more »
• Examples: the interDyMFoam tutorials, e.g. for marine engineering (DTCHull) are all updated to use the new rigid-body dynamics and mesh motion libraries. » more »
• Sponsored by Carnegie Wave Energy Ltd.

Multiphase, Reacting Flows

• Lift and drag models: new wallDampedLift model supporting near-wall damping for Euler-Euler multiphase solutions » more »; new TomiyamaKataokaZunSakaguchi drag model for bubbles in gas-liquid systems. » more »
• Boundary conditions: new temperatureDependentAlphaContactAngle boundary condition » more »; new fixedMultiPhaseHeatFlux boundary condition to calculate a wall temperature for overall wall heat flux across multiple phases. » more »
• Solvers: corrected pressure equations for transonic operation in Euler-Euler multiphase solvers » more »; vastly reduced scattering and churning behaviour in packed beds in MPPICFoam. » more »
• Post-processing: new moleFractions function object to write mole fraction fields » more »

Other Modelling and Functionality

• kOmegaSSTDES: new DES turbulence model based on the k-omega SST RAS model for incompressible and compressible flow. » more »
• Turbulence model sources/constraints: can be plugged in at run-time using fvOptions. » more »
• logPolynomial: new transport model for viscosity, thermal diffusivity, in the thermophysical modelling library, see OpenFOAM User Guide, section 7.1.
• fireFoam: optional hydrostatic initialization of the pressure and density, used in conjunction with the prghTotalHydrostaticPressure boundary condition. » more »
• Sources: new buoyancyForce and buoyancyEnergy sources, for compressible solvers » more »; redesigned fixedValueConstraint, to constrain field values within a specified region. » more »
• Meshing: consistent face orientation in baffle interfaces created during meshing, e.g. to ensure correct flux calculations. » more »; removed zero sized patches from output of snappyHexMesh » more » and createBaffles. » more »
• ACMI: removed major limitations, e.g. on mapping for partially overlapping faces. » more »

Software Management and Development

• Rolling upgrade of OpenFOAM is faster and simpler with improvements to compilation scripts and environment settings, including Allwmake -update, as described in the Source Repository installation.
• foamList: lists models within OpenFOAM, including turbulence models, function objects, fvOptions, switches and boundary conditions. » more »
• Doxygen: simplified and updated the configuration for creation of C++ source guides, published the OpenFOAM v4 C++ Source Guide and OpenFOAM v3 C++ Source Guide.
• User Guide: new and major rewrites of 4.4 Numerical Schemes, 4.5 Solution Control, 4.6 Case Management and 6 Post-processing; significant updates to 2 Tutorials, 3 Applications and 5 Mesh Generation and Conversion.
• foamNewBC: script to create template code for a new boundary condition. » more »
• foamNewApp: script to create template code for a new application. » more »
• foamNewFunctionObject: script to create template code for a new function object. » more »
• Messaging: new InfoInFunction, ErrorInFunction, DebugInFunction and DebugInfo for simpler Info, Error and Debug messaging in class code, e.g. debug messaging; new Log macro outputs to Info if log is true. » more »
• Robust data handling: new convention for const and non-const reference functions of fields where the non-const function name ends …Ref(); for example, where internalField() provides the const reference to the internal field, internalFieldRef() provides a non-const reference. » more »; for tmp objects, non-const access uses a ref() function rather than the () dereferencing operator. » more »
• API: new Zero static const variable for simple and efficient initialization and assignment of primitives to 0 » more »; new (i, j) addressing to the Matrix class, for better interoperability with other C++ libraries. » more »

Performance

• Flux calculation: new fvc::flux(volField) function improves efficiency and cache coherency, and reduces peak storage » more », effective for new processor architectures; uses new dotInterpolate function which avoids storing an interpolated field in flux calculations. » more »
• Matrices: reimplemented in the core OpenFOAM library » more »; replaced the row-start pointer array with computed offsets in the Matrix class, for 15% speed up in LUsolve. » more »
• Parallel computation: improved parallel decomposition and reconstruction » more »; optimised data exchange » more »; and, improved the operation of the parallel field mapping utility mapFieldsPar. » more »

Contributors

OpenFOAM v4.0 was produced by:

• Architect/Lead: Henry Weller
• Management: Henry Weller, Chris Greenshields
• Maintenance/Testing/Contributions: Henry Weller, Chris Greenshields, Bruno Santos, Mattijs Janssens.
• Other Contributions: Will Bainbridge, Karl Meredith, Paul Edwards, Juho Peltola, Timo Niemi, Richard Jones, Daniel Jasinski, Hassan Kassem.

Thanks to the OpenFOAM enthusiasts who have contributed to a better code through the bug reporting system.
To download OpenFOAM 4.0, click here.

Greetings to all!

The Civil Engineering Department of the University of Coimbra, Portugal, is pleased to welcome the 2nd Foam@PT / 1st Iberian Meeting of OpenFOAM® Technology Users that will take place on the 1st and 2nd of June, 2017.

It's primarily aimed at people from Portugal and Spain, but anyone is welcome to attend as well!

For more details, see the Foam@PT user group website: http://encontros.foam.pt/

July 10th-14th. 2017. OpenFOAM introductory training

This training is aimed to 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, as well as other meshing and post-processing open-source tools.

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, to assessing the convergence, to basic programming. Additionally, a few sessions will be dedicated to solid modeling, mesh generation, and visualization using open-source tools. 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.

This course is offered by wolf dynamics in collaboration with the University of Genova

For more information, visit the following link http://www.wolfdynamics.com/our-serv...-training.html

Wanted to draw you attention on my latest project: a "script" to compile OpenFOAM-variants on different Linux-versions. It makes sure that the required software is installed.

The script is implemented with Ansible a tool for automating adminsitrative tasks.

Currently supported Foam-versions are OpenFOAM 4.1, OpenFOAM+ v1612 and Foam-extend 4.0

Implemented Linux-versions are Centos /, ArchLinux, Ubuntu 1604 and Fedora 25.

For details see the project page https://sourceforge.net/p/openfoam-e...tree/README.md and the Wiki-page https://openfoamwiki.net/index.php/Installation/Ansible

The project should be currently be considered in the Alpha-phase: it was only run on my machines, worked there but nobody else has tried it. So if you are new to OpenFOAM don't try it yet

Feedback and contributions are welcome

Have fun
Bernhard Gschaider

The next major version of Caelus, 7.04, was released today. This release is the largest release to date with major new capabilities in both the library as well as application-based features. Here’s a summary of the new capabilities:

• cfMesh, a GPL meshing library from Creative Fields d.o.o. (https://sourceforge.net/projects/cfmesh/)
• PIMPLE-based incompressible transient solver with Lagrangian particle tracking [Applied CCM]
• Volume of Fluid (VOF) phase-fraction based solver for two incompressible, isothermal immiscible fluids with dynamic mesh motion [OpenFOAM Foundation]
• Major improvements to parallel pre-processing including the ability to decompose meshes and fields in parallel [OpenFOAM Foundation]
• New second-order gradient scheme using nodal averaged Green-Gauss (NAGauss), particularly beneficial for tetrahedral meshes [Applied CCM]
• Corrected face tangent surface normal gradient scheme with non-orthogonal correction (correctFT) [Applied CCM]
• Fixes for least squares gradient (LSQ) gradient that enables second order accuracy in both internal cells and boundaries [Applied CCM]
• PBiCGStab non-symmetric linear solver [OpenFOAM Foundation]
• SPAI(0) preconditioners and smoothers suitable for very large parallel applications [Applied CCM]
• Added incompressible and compressible kEpsilon turbulence models [OpenFOAM Foundation]
• Virtual Blade Model for high fidelilty rotorcraft modeling [OpenFOAM Foundation]
• Radial Basis Function (RBF) interpolator [LEMOS project; Frank Bos and Dubravko Matijasevic]
• RBF mesh motion solver [LEMOS project; Frank Bos and Dubravko Matijasevic]
• Rigid body dynamics model to model motion of multiple independent or linked rigid bodies with suite of constraints [OpenFOAM Foundation]
• Update to Scons build system. External contribution from Shreyas Ananthan.

There is a release notes PDF available on the download page with a more detailed description: http://www.caelus-cml.com/download/. We will be moving to annual releases for major upgrades to capabilities after this release.

Look to the source repository with 7.04 updates shortly: https://bitbucket.org/appliedccm/caelus-contributors

If you’re not already familiar with Caelus, you can read more about it on the website. Its free and open-source. The file formats are compatible with OpenFOAM but there have been many improvements to it such that it is now moving independently in its own direction.

We are happy to answer questions, technical or otherwise, by opening a thread on CFD-Online or directly through email: caelus@appliedccm.com. Please try not to use both for the same question - either or. If you want to ask questions other than about the release, if you don't mind, please open a new thread with Caelus somewhere in the title.

Stay up to date with Caelus on Twitter @caelus_cml or Facebook

Applied CCM is currently the maintainer and main developer of Caelus. If you’re interested in porting or developing your own application to Caelus, we’ll be happy to provide guidance. If you’ve developed a solver or model that you would like to include in Caelus check out the contributors repository. Any and all external contributors copyright will be kept in their contributed source files.

Faculty of Mechanical Engineering (www.fsb.unizg.hr), University of Zagreb, Croatia (www.unizg.hr), announces the twelfth edition of the School on Modelling of Coupled Problems in Applied Physics with OpenFOAM (NUMAP-FOAM) for graduate students and young researchers in Zagreb in Zagreb in August and September 2017. The Programme Chairs are Professor Hrvoje Jasak and Professor Zeljko Tukovic.


Description

The School aims to provide tuition at expert level for a small and selected group of students and researchers in academia and industry. The idea of the NUMAP-FOAM School is to expand the physical modelling knowledge, numerics and programming skills of attendees using OpenFOAM in their research through direct supervision and one-to-one project work. Lectures on chosen topics of mathematical and numerical modelling pertinent to coupled problems in engineering and applied physics will be delivered in addition. For further references, please contact the organisers or one of more than 135 alumni of previous editions of the School.

To ensure quality of work and individual supervision, the number of places is strictly limited.


Place and Time

The Summer 2017 edition NUMAP-FOAM shall take place between Monday 21 August 2017 and Friday 1 September 2017, inclusive (10 working days). The School shall be held at the Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lucica 5, Zagreb, Croatia.


Topic Areas

Students are invited to propose their own topics for the School. Preference shall be given to project which required complex programming tasks in OpenFOAM, advanced C++ and software engineering and implementation of complex and coupled physical models in OpenFOAM. Special topics for this year's Summer School are free surface flows, naval hydrodynamics, computational solid mechanics using FVM, complex heat and mass transfer problems, higher order discretisation methods and acoustics.


How to Apply: NUMAP-FOAM Summer School 2017

To apply, please write a one-page description of the project you wish to work on, with current problems and goals to be achieved at the School. Application is open to all students on graduate University courses, as well as young researchers in companies and government organisations with sufficient prior OpenFOAM knowledge.

Please note this is NOT an introductory OpenFOAM course: significant understanding of the project and software is a pre-requisite for application.

Deadline for application is 1 May 2017. Successful candidates will be informed within three weeks of closing.


Accommodation and Costs

Attendees to the School should plan to cover their travel and accommodation expenses, ideally bringing a laptop computer with them. A registration fee for the School is EUR 2000 per attendee.


Contact Details

For further details and submission of project proposals, please contact prof. Hrvoje Jasak at hrvoje.jasak@fsb.hr. For local organisational details please contact NUMAP-FOAM Secretary Mrs. Silvana Skoko-Gavranovic at silvana.skoko-gavranovic@fsb.hr.

NUMAP-FOAM 2017

Legal

OPENFOAM is a registered trade mark of OpenCFD Limited

Dear Foamers,

This post is to let you know about the open-source release of the hyStrath GitHub repository that contains
two new solvers to deal with hypersonic reacting flows and supersonic combusting flows.

You will find more information here:
- source code: https://github.com/vincentcasseau/hyStrath
- Wiki page: https://github.com/vincentcasseau/hyStrath/wiki


March 2017: Open-source release version 1.0

• source code

• tutorials

• hy2Foam

* generic case
* 2D axisymmetric blunted cone
* 2D planar cylinder

• hyFoam

* coming soon (April 2017)

• manuals

• latest conference presentation (03 Nov. 2016, Final Stardust Conference at ESA-ESTEC)

Available for OpenFOAM versions

• 2.3.0: http://openfoam.org/download/2-3-0-ubuntu/

• 2.4.0: http://openfoam.org/download/2-4-0-ubuntu/

• 2.4.0-MNF: https://github.com/MicroNanoFlows/OpenFOAM-2.4.0-MNF

Pre-requirements: Good knowledge of OpenFOAM and the rhoCentralFoam solver
Installation: ./install.sh


Related articles to be found at:

• http://www.mdpi.com/2226-4310/3/4/34/html

• http://www.mdpi.com/2226-4310/3/4/45/html

Latest conference papers:

• http://aip.scitation.org/doi/pdf/10.1063/1.4967557

• Available soon: J.-J. Hoste et al. 'Numerical Modeling and Simulation of Supersonic Flows in Propulsion Systems by Open-Source Solvers' (AIAA Hypersonics, Xiamen, China, 6-9 March 2017)

hy2Foam is an open-source two-temperature computational fluid dynamics (CFD) solver that has been developed
to tackle the highly complex flow physics of the hypersonic planetary atmospheric entry. Implemented within
the OpenFOAM framework, the code has the capability to model physical phenomena relative to the high-speed
chemically-reacting environment surrounding a spacecraft. The core of the solver initially relied on OpenFOAM
solvers rhoCentralFoam and reactingFoam and it has been complemented with many new features, some of which
are listed below

* non-equilibrium Navier-Stokes-Fourier equations: Park's two-temperature CFD model is implemented
and the choice of having a single vibrational energy pool and multiple vibrational energy pools is left to the user.
Energy transfers between the different energy pools are
+ Vibrational-Translational (V-T)
+ Vibrational-Vibrational (V-V)
+ Heavy particle-electron (H-e)
+ Electron-Vibration energy transfer (e-V) --> available soon
* addition of the electronic and electron energy modes
* finite-rate chemistry
* chemistry-vibration coupling: Park TTv model, coupled vibration-dissociation-vibration (CVDV) model
* customizable chemistry databases (Park 1993, Park 1994, Dunn & Kang 1973, quantum-kinetics: Scanlon 2015)
including dissociation, electron impact dissociation, electron impact ionization, associative ionization,
exchange and charge exchange reactions
* capability to handle species with several characteric vibrational temperatures (e.g., CO2) for the Mars atmospheric entry
* transport models: Blottner and Eucken, power law and Eucken, Sutherland and Eucken, constant
* species diffusion models: Lewis number, generalised Fick's law
* mixing rules: Wilke, Armaly & Sutton
* turbulence models (no change made to OF 2.3.0): laminar, k-omega SST, k-Epsilon, Spalart Allmaras
* computation of the convective wall heat flux
* computation of the mean-free-path and the breakdown parameter
* boundary conditions: Smoluchowski temperature jump and Maxwell velocity slip BCs were adapted.
Possibility to gradually increase the inlet flow velocity (rampInlet).
* all dictionaries can be re-read on-the-fly: handy on a high-performance computer.



hyFoam is an open-source computational fluid dynamics (CFD) solver that is derived from hy2Foam. In the latter
code, the trans-rotational and vibro-electronic energy modes are considered to be in thermal equilibrium at all times,
thus producing a single-temperature CFD solver. hyFoam has the capability to model the high-speed chemically-reacting
environment inside a scramjet. Most of hy2Foam features remain accessible and hyFoam further receives the addition of

* customizable chemistry databases (Evans & Shexnayder 1980, Jachimoski 1992)
* hydrogen compounds added to the thermochemical database
* transport model: CEA2 (Chemical Equilibrium with Applications, NASA)


> While we did our best to eliminate bugs, please do not hesitate to contact us should you find anything.
Enquiries: hy2Foam@gmail.com

hyStrath has been developed under the license GNU GPL-3.0 at the University of Strathclyde, Glasgow, UK.
This work is funded by the Engineering and Physical Sciences Research Council (EPSRC).

Thanks,

Vincent

{{NewEvent
|shorttext=The OpenFOAM User Meeting v. 14 will take place at the Virtual Vehicle in Graz. All Foamers or anyone who is interested are welcome.
If you want to participate or need further information please email to alexander.kospach@v2c2.at

|eventdate=2017/07/06
|eventend=2017/07/06
|eventlocation=Address: 8010 Graz, Inffeldgasse 21a
Room: IMEG 140
}}