Dear PyFR developers, I am writing my master thesis using pyfr to simulate the flow over a turbine cascade similar to T106c test case used in "F. D. Witherden and A. Jameson Impact of Number Representation for High-Order Implicit Large-Eddy Simulations" paper. However I have some questions ...

Author: Amir Hossein Jafari Matin
Date: Thu, 19 Nov 2020 12:39:15 UTC
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Dear PyFR Developers, During the PyFR symposium earlier this year, you have presented some work on multiphase fluid flow. Would you be able to send us some more details on this work? I believe you were working on a mixture model, but wasn't able to verify it. If you have any published or ...

Author: Robert Sawko
Date: Mon, 16 Nov 2020 09:20:27 UTC
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Dear all, Recently, I want to use the command '[soln-plugin-fluidforce-name]' in PyFR v1.8.5 to export the surface force of a cylinder. When I open the .csv file, I found the header names are 't', 'px', 'py', 'vx' and 'vy'. Are the header names 'px' and 'py' related to the total force of ...

Author: Kiny Wan
Date: Wed, 11 Nov 2020 12:54:16 UTC
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Dear PyFR developers, I would like to partition solutions of the tavg plugin in order to make easier the post-treatment on it. However when running pyfr partition on the solution of this plugin, I have the following message error: Traceback (most recent call last): File "/home/anthony/anacond ...

Author: Anthony Larroque
Date: Wed, 11 Nov 2020 12:02:06 UTC
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Dear all, I recently read the file of roe.mako in the installed directory 'PyFR-1.8.5\pyfr\solvers\euler\kernels\rsolvers', and met problems about some functions and equations. 1. Is there any document listed the equations related to this roe solver? I only found the equations ...

Author: Kiny Wan
Date: Wed, 04 Nov 2020 02:06:54 UTC
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Dear PyFR Developers, I am trying to run a simulation with CUDA backend on 12 GPUs. However I get the following error: Traceback (most recent call last): File "/rwthfs/rz/cluster/home/am073751/PyFR/ENV4/lib/python3.7/site-packages/pyfr/util.py", line 33, in __call__ res = cache[key] ...

Author: Amir Hossein Jafari Matin
Date: Mon, 26 Oct 2020 10:04:03 UTC
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Dear PyFR developers, In our in-house Spectral-Differences (SD) code, we have recently found a small bug related to the gradient computation. This bug was discovered by testing the k-exact properties of the gradient operator. I first implemented this test in PyFR to better understand if our ...

Author: Gonzalo Sáez
Date: Tue, 20 Oct 2020 21:07:20 UTC
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Hi, We have 4 Nvidia SXM2 V100's on a single node. I noticed that our system-available MPI library (Openmpi 3.1.0) was not compiled with any Cuda support, and I am worried that we may be losing out on some performance. This version of the V100 should support extremely fast GPU-GPU communication ...

Author: Michael Laufer
Date: Sat, 17 Oct 2020 21:51:04 UTC
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Dear PyFR developers, I would like to reproduce the results of the cylinder at Re = 3900 of your articles: - On the utility of GPU accelerated high-order methods for unsteady flow simulations: A comparison with industry-standard tools - Heterogeneous computing on mixed unstructured grids with ...

Author: Anthony Larroque
Date: Tue, 13 Oct 2020 16:23:44 UTC
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Hello Everyone, I have a question regarding the order of accuracy of the ACM method; Have you done any tests using the method of manufactured solutions ( published or otherwise) ? I tried the 2D taylor green benchmark but the order of accuracy I am getting is nowhere near what it should be. ...

Author: mkamra
Date: Tue, 06 Oct 2020 14:47:28 UTC
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Dear PyFR developers, I was wondering if you could help me with my test case. I have a modest OLCF Summit allocation to test strong scaling of ACM for an internal flow simulation and I am trying to set it up in PyFR using Loppi et al files. My target geometry is a double elbow, but I am ...

Author: Robert Sawko
Date: Wed, 30 Sep 2020 21:55:51 UTC
Link:

I'm running the examples given in the PyFR GitHub repo. To run with OpenMP I use the following command: $ pyfr run -b openmp -p couette_flow_2d.pyfrm couette_flow_2d.ini To run with CUDA I use this command: $ pyfr run -b cuda -p couette_flow_2d.pyfrm couette_flow_2d.ini When running the ...

Author: Gavin Wiggins
Date: Wed, 30 Sep 2020 15:05:28 UTC
Link:

I'm trying to run the Couette flow example using the CUDA backend via the following command: $ pyfr run -b cuda -p couette_flow_2d.pyfrm couette_flow_2d.ini But I get the following error: File "/home/cades/miniconda3/lib/python3.8/site-packages/pyfr/backends/cuda/cublas.py", line 78, in ...

Author: Gavin Wiggins
Date: Sat, 26 Sep 2020 01:11:42 UTC
Link:

In the PyFR GitHub repository there is a "doc" directory. It looks like this directory is for building the documentation with Sphinx. But where is the documentation hosted? Is it just the main PyFR website at http://www.pyfr.org? ...

Author: Gavin Wiggins
Date: Thu, 24 Sep 2020 14:45:03 UTC
Link:

Is there a certain workflow that people should follow to contribute to PyFR on GitHub? I noticed the repository shows the `develop` branch by default. Should Pull Requests be made to the `develop` branch or to the `master` branch? ...

Author: Gavin Wiggins
Date: Tue, 22 Sep 2020 15:21:43 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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