Hi all, I would like to implement a basic Algebraic Wall Model in PyFR. The model consists of 2 simple equations for the turbulent boundary layer: one for the shear stress and another for the heat flux (in case of an isothermal BC). As a 1st attempt, we can restrict the Wall Model to probe the ...

Author: Eduardo Molina
Date: Tue, 25 Feb 2020 01:18:21 UTC
Link:

Hi guys. As a part of my master thesis i am simulating flow on an airfoil (90 deg) in openfoam. I also want to compare my results with pyfr (3rd order). Somehow, my setup at the present moment wont start to simulate. I am using Ubuntu on a Windows computer (through Oracle Virtual Box). My ...

Author: Stian Hjorteland
Date: Thu, 20 Feb 2020 15:14:20 UTC
Link:

Hi guys! I am new to PyFR and was trying to run the tutorial case called 2D Couette Flow. This works fine, the only problem is that the simulation is estimated to spend 80 hours. This should be a simple 2D simulation, and it should be done in less then 10minutes i assume. I use a very strong ...

Author: Stian Hjorteland
Date: Mon, 17 Feb 2020 12:08:25 UTC
Link:

I followed the list of dependencies that was required and installed through anaconda. Then I created PyFR from source. I linked cblas in the .ini file "cblas = C:\Users\{Username}\AppData\Local\Continuum\anaconda3\Library\include\openblas" then started running this command: "pyfr run -b openmp ...

Author: Xavier Johnson
Date: Mon, 10 Feb 2020 21:36:23 UTC
Link:

Hi All, I'm a new user of PyFR. I started by running the 2D benchmark cases provided with the source files and then moved up to the supplementary materials of journal publications. I'm currently running the 3D sd7003 case, files are attached. At first, I am using p1 to initialize my domain. ...

Author: Solal Amouyal
Date: Tue, 04 Feb 2020 13:52:07 UTC
Link:

hello, when trying to import a CGNS mesh (YF-17 from cgns website), I am getting: jrcc@bilbo:/data/projects/JrcC/pyfr/cgns_test$ pyfr import yf17.cgns qqq.pyfrm Traceback (most recent call last): File "/home/jrcc/.local/lib/python3.6/site-packages/pyfr/readers/cgns.py", line 114, in _errcheck ...

Author: Junting Chen
Date: Wed, 22 Jan 2020 21:57:12 UTC
Link:

Hello everyone, I am still running the case I was mentioning in the last 2 post on this mailing list, i.e. high reynolds (3e6) 2D incompressible flow over the ls417. I have problems since the results, in particular the k coming out of the results, are quite different from the one computed using ...

Author: Giulio Ortali
Date: Wed, 22 Jan 2020 15:20:27 UTC
Link:

Hello, I´m using the code from the supplementary material of https://doi.org/10.1017/jfm.2019.520 for channel flow simulations. Could you please provide a sample ini file, to see which parameters are necessary / available for the bulk_flow_controller and spatial_average plugins, to adjust a ...

Author: Marius
Date: Tue, 21 Jan 2020 14:33:22 UTC
Link:

Hi to all, I need to compute some mean-field and turbulent features of a pyfr simulation. In particular I need to have velocity and pressure mean fields, k, omega, epsilon and nu_t, in order to compare them to RANS results. To do this I need to compute, inside pyfr: * time averages of velocity ...

Author: Giulio Ortali
Date: Tue, 21 Jan 2020 09:41:56 UTC
Link:

Hello everyone, I am new to pyfr, and i need to use it in order to generate some high fidelty data on a 2D incompressible airfoil problem. I tried replicating the inc_2d_cylinder case by changing the mesh, generated using gmsh. However, when i launch the run, I obtain all NaN in all the domain ...

Author: Giulio Ortali
Date: Mon, 13 Jan 2020 08:25:14 UTC
Link:

Dear all, Is it possible for PyFR to export the pressure value of the boundaries using [soln-plugin-writer] instead of a single domain? Since PyFR is a powerful tool for fluid simulation, can developers implement more informations about FW-H equations for acoustic prediction or couple ...

Author: Kiny Wan
Date: Sun, 12 Jan 2020 05:58:14 UTC
Link:

Hello, I am wondering if someone can provide a bit more descriptions on these parameters to optimize performance. As far as I know, when using multiple GPUs, I had to select local-rank for device-id and cuda-aware for mpi-type. When exactly should i be using round-robin and local-rank? And ...

Author: Junting Chen
Date: Mon, 06 Jan 2020 17:34:40 UTC
Link:

Dear all, I recently initiated a normal shock in the flow field and found that it is unstable with the shock capturing methods including roem or roe. I think this phenomenon may be caused by the zero velocity in y direction. Any solutions to this problem? [image: normal shock wave.jpg] ...

Author: Kiny Wan
Date: Sun, 24 Nov 2019 02:25:38 UTC
Link:

Dear all, I recently installed PyFR with "pip install pyfr==1.9.0" and opened the files of pyfr as a project in Spyder (anaconda in windows 10). Is it possible to run a simple example and debug it step by step? I want to know the code structure and data types in details. Yours Kiny ...

Author: Kiny Wan
Date: Fri, 15 Nov 2019 07:01:12 UTC
Link:

Dear All, We have released PyFR v1.9.0. New Features: - Improved strong scaling - Added support for Gmsh v4.1 - Fixed performance issue with OpenCL backend Download: http://www.pyfr.org/download.php Thanks again for your interest in the project. Peter Dr Peter Vincent MSci ARCS DIC ...

Author: Vincent, Peter E
Date: Mon, 11 Nov 2019 14:35:56 UTC
Link:

Summary: A fully funded Postdoctoral position is currently available. The project, will involve development of PyFR, an open-source high-order massively-parallel cross-platform CFD solver, as well as its application to solve a range of challenging unsteady flow problems. Candidates should hold, or expect to obtain, a PhD in a numerate discipline from a world-leading university.

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