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## Recent Topics

Hi Peter, Last week in Brussel, you told me that you have a work around to account for periodicity in axisymmetric computational domains. Can you send me some instructions for Gmesh or Pointwise to manage the aforementioned? Kind regards Lars ...

Author: LW
Date: Tue, 20 Nov 2018 14:07:51 UTC
Hello everyone, I am trying to repeat the Taylor Green vortex with v1.8.0. The codes now runs well. But I am stuck with the extraction of statistics such as kinetic energy or enstropy. In general, there are two possible ways: 1. Export vtu files at intemediate steps, and extract data from ...

Author: Jian Yu
Date: Tue, 13 Nov 2018 01:56:07 UTC
Hi all, I want to use the solution of a turbulent flow from PyFR as an input for a Lagrangian simulation. The problem is computing the trajectories of the particles advected by the flow are sensitive to local errors in the fluid velocity field and can diverge. The trajectories can be computed ...

Author: Eduardo Ramos Fernandez
Date: Mon, 12 Nov 2018 15:45:44 UTC
Hello! I am interested in coupling Pyfr with other codes through a custom communication MPI based library. The general scheme to this would the following: 1) Replace internal MPI (mpi4py) communicators with one that I provide appropriately splitted. 2) During each solver time-step: 2.1) ...

Author: Eduardo Ramos Fernandez
Date: Wed, 31 Oct 2018 10:33:01 UTC
Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ...

Author: Robert Sawko
Date: Fri, 26 Oct 2018 17:15:30 UTC
Hello, I am just scoping out a project with a colleague and we were considering employing PyFR for an internal flow. We have limited experience with DG in fluid mechanics so I thought it's best to ask before we commit. Please let me know if the following could work in PyFR and if there are any ...

Author: Robert Sawko
Date: Tue, 16 Oct 2018 13:54:06 UTC

Author: Vincent, Peter E
Date: Mon, 15 Oct 2018 15:17:52 UTC
$pyfr run -b opencl -p inc_cylinder_2d.pyfrm inc_cylinder_2d.ini Assertion failed: (has_meta_for_every_arg && "kernel_arg_addr_space meta incomplete"), function int pocl_get_kernel_arg_function_metadata(const char *, llvm::Module *, cl_kernel), file /wrkdirs/usr/ports/lang/pocl/work/pocl- ... Author: Yuri Date: Fri, 21 Sep 2018 06:34:56 UTC Link: On FreeBSD 11.2 (with the clang compiler) this command fails:$ pyfr run -b openmp -p inc_cylinder_2d.pyfrm inc_cylinder_2d.ini Traceback (most recent call last): File "/usr/local/lib/python3.6/site-packages/pyfr/util.py", line 33, in __call__ res = cache[key] KeyError: (
Author: Yuri
Date: Fri, 21 Sep 2018 05:11:28 UTC
__main__.py is installed directly into the \$(PREFIX) directory. Everything should be installed either into bin/ or into the python module directory. OS: FreeBSD 11.2 ...

Author: Yuri
Date: Fri, 21 Sep 2018 04:47:35 UTC
Dear All, We have released PyFR v1.7.6. New Features: - Bug fixes in OpenCL backend. - Bug fixes in parallel HDF5 writer. Download: http://www.pyfr.org/download.php Thanks again for your interest in the project. Peter Dr Peter Vincent MSci ARCS DIC PhD FRAeS Reader in Aeronautics ...

Author: Vincent, Peter E
Date: Tue, 14 Aug 2018 14:16:43 UTC
Hi guys, I am trying to define some velocity profiles in [soln-ics] using the expressions below. I think that it doesn't pass the 'if' and 'else' statements to the solver. Do you have some suggestions please? Any help would be much appreciated. Cheers, Andrei *if y<1.:* * yplus = y * ...

Author: AC
Date: Mon, 13 Aug 2018 15:47:40 UTC
Hello all, Is there a "filter" that can render C0 continuous data from PyFR output (that is by definition discontinuous at the elements). Why? I'm trying to calculate PSD in space for Taylor-Green Vortex case and there occur peaks on wave-numbers corresponding to the element size. Kindly ...

Author: Vishal Saini
Date: Fri, 10 Aug 2018 18:15:16 UTC
When using hex elements with order say 4 or 5, the number of non-zeros in the GiMMiK kernels gets quite high. E.g., with n=4, tgradpcoru_upts [hex] appears to get 1819 non-zeros from 46875 entries (i.e. about 4% non-zeros) Just wondering, for high-order 3d runs, what's an appropriate way to ...

Author: nnunn
Date: Thu, 09 Aug 2018 15:37:57 UTC
Hi all, I'm a first year PhD student and interested in calculating the volume integrals of expressions like (u.u + v.v + w.w) in the whole domain of Taylor-Green vortex problem. I'd like to do it within PyFR because I found that if I write the results and do the integrals in say, Paraview ...

Author: Vishal Saini
Date: Thu, 26 Jul 2018 08:25:55 UTC

PyFR 1.8.0: