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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:
Dear all, I want to obtain the root-mean-square density of each point of the whole field and write them out like the pressure, density and velocity in .pyfrs. So, is there any way to change the [soln-plugin-writer] to get the root-mean-square density? This root-mean-square density means ...

Author: Kiny Wan
Date: Sun, 27 Oct 2019 06:48:30 UTC
Link:
Hello everyone. Recently, I used PyFR to simulate a Gauss wave propagating in a uniform flow with Mach number 0.5. Imperfectly, there exist errors between the result of PyFR and that of analytical solution. Figure 1 shows the comparison of perturbed pressure at time t=5. It is apparent to find ...

Author: Kiny Wan
Date: Sat, 12 Oct 2019 05:04:43 UTC
Link:
Hi, I opened couette_flow_2d.msh with gmsh. I see that the number of meshed are small (mean bigger polygons). I then double-clicked in the screen and used a low value for "global mesh size factor", e.g. 0.4. Then I clicked on Modules->Mesh->2D and is said "Done meshing 2D". However, screen ...

Author: Mahmood Naderan
Date: Tue, 01 Oct 2019 19:32:47 UTC
Link:
Hi, I have saved a msh file with gmsh-4.4.1, however, the import command fails with invalid mesh version. pyfr import ~/Downloads/gmsh-4.4.1-Linux64/share/doc/gmsh/demos/untitled.msh untitiled.pyfrm Traceback (most recent call last): File "/home/mahmood/.local/bin/pyfr", line 11, in ...

Author: Mahmood Naderan
Date: Sun, 29 Sep 2019 13:25:08 UTC
Link:
Hello developers, I am working on adding a new inlet boundary condition in acnavierstoke solver which allows user/me to define the value on each node from another set of solution, and also value on each node varies over time. In short, I would like to have something similar to timeVaryingMappedF ...

Author: Junting Chen
Date: Sun, 29 Sep 2019 04:49:05 UTC
Link:

Latest Release

PyFR 1.9.0:

  • Improved strong scaling.
  • Added support for Gmsh v4.1.
  • Fixed performance issue with OpenCL backend.

Join our Team

Postdoctoral Position - GPU Accelerated High-Order Computational Fluid Dynamics
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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