# \#mesh **URL:** https://pyfr.discourse.group/tag/mesh/3.md [Latest](https://pyfr.discourse.group/latest.md) · [Categories](https://pyfr.discourse.group/categories.md) · [Tags](https://pyfr.discourse.group/tags.md) --- ## [Pyfr export volume exports only one kind of cell](https://pyfr.discourse.group/t/pyfr-export-volume-exports-only-one-kind-of-cell/1366)
**Author:** [@AlmostSurelyRob](https://pyfr.discourse.group/u/AlmostSurelyRob)\ **Replies:** 4\ **Last updated:** [2 June 2026 15:33 UTC](https://pyfr.discourse.group/t/pyfr-export-volume-exports-only-one-kind-of-cell/1366 "2026-06-02T15:33:42Z")
On a development branch of PyFR I am exporting a large mixed element mesh composed of prisms and tets, but the VTU appears to contain only the near wall prisms. Is this an issue or am I missing some setting? pyfr export… --- ## [Postprocessing .vtu files seems to only have discontinuous fields](https://pyfr.discourse.group/t/postprocessing-vtu-files-seems-to-only-have-discontinuous-fields/1346)
**Author:** [@Bob](https://pyfr.discourse.group/u/Bob)\ **Replies:** 1\ **Last updated:** [6 March 2026 12:51 UTC](https://pyfr.discourse.group/t/postprocessing-vtu-files-seems-to-only-have-discontinuous-fields/1346 "2026-03-06T12:51:25Z")
Hello :), I have been trying to use PyFR .vtu outputs for post-processing, but after looking into the files more closely it seems that the cells are exported as disconnected elements. For my application this is problema… --- ## [Modifying mesh of 2d demo case](https://pyfr.discourse.group/t/modifying-mesh-of-2d-demo-case/1321)
**Author:** [@second\_moment](https://pyfr.discourse.group/u/second_moment)\ **Replies:** 10\ **Last updated:** [7 December 2025 00:37 UTC](https://pyfr.discourse.group/t/modifying-mesh-of-2d-demo-case/1321 "2025-12-07T00:37:22Z")
I have been getting started by trying to modify the 2d-inc-cylinder tutorial to be a flow around a rhombus instead of around a round cylinder. To do so I produced a new mesh using Gmsh but otherwise ran the same configur… --- ## [Is volume export not supporting prisms?](https://pyfr.discourse.group/t/is-volume-export-not-supporting-prisms/1309)
**Author:** [@AlmostSurelyRob](https://pyfr.discourse.group/u/AlmostSurelyRob)\ **Replies:** 3\ **Last updated:** [28 October 2025 11:55 UTC](https://pyfr.discourse.group/t/is-volume-export-not-supporting-prisms/1309 "2025-10-28T11:55:45Z")
On a recently cloned develop branch. Trying to export to vtu with pyfr export volume mesh.pyfrm output.pyfrs output.vtu I get the following error Traceback (most recent call last): File "../venvs/pyfr-devel/bin/pyfr… --- ## [Partition error of a mesh generated by Pointwise](https://pyfr.discourse.group/t/partition-error-of-a-mesh-generated-by-pointwise/1312)
**Author:** [@y.y](https://pyfr.discourse.group/u/y.y)\ **Replies:** 1\ **Last updated:** [24 October 2025 12:29 UTC](https://pyfr.discourse.group/t/partition-error-of-a-mesh-generated-by-pointwise/1312 "2025-10-24T12:29:37Z")
\[Enviroment\] PyFR 2.1 Pointwise 2024.2.1 METIS 5.2.1 I generated mesh with Pointwise, and tried mesh partition but I got an error. pyfr partition 8 lrn1015\_structured\_2c.pyfrm . Traceback (most recent call last): F… --- ## [Scotch partitioning doesn't work out of the box](https://pyfr.discourse.group/t/scotch-partitioning-doesnt-work-out-of-the-box/1299)
**Author:** [@AlmostSurelyRob](https://pyfr.discourse.group/u/AlmostSurelyRob)\ **Replies:** 1\ **Last updated:** [18 September 2025 18:42 UTC](https://pyfr.discourse.group/t/scotch-partitioning-doesnt-work-out-of-the-box/1299 "2025-09-18T18:42:22Z")
I couldn’t immediately find an answer on the forum, so I thought writing this up may help another person. A similar error has been reported here but I thought a more explicit solution may be useful to some. Problem: Whe… --- ## [Mesh import with binary Gmsh version 4 fails](https://pyfr.discourse.group/t/mesh-import-with-binary-gmsh-version-4-fails/1293)
**Author:** [@AlmostSurelyRob](https://pyfr.discourse.group/u/AlmostSurelyRob)\ **Replies:** 4\ **Last updated:** [5 September 2025 15:01 UTC](https://pyfr.discourse.group/t/mesh-import-with-binary-gmsh-version-4-fails/1293 "2025-09-05T15:01:21Z")
I have a Gmsh mesh with a header which looks like this $MeshFormat 4.1 1 8 \ $EndMeshFormat $Nodes \ ... And it fails to import to PyFR with an error: Traceback (most recent call last): F… --- ## [Restarting PyFR simulation of same mesh with different partition](https://pyfr.discourse.group/t/restarting-pyfr-simulation-of-same-mesh-with-different-partition/1289)
**Author:** [@ugyen-wangchuk](https://pyfr.discourse.group/u/ugyen-wangchuk)\ **Replies:** 3\ **Last updated:** [28 August 2025 12:23 UTC](https://pyfr.discourse.group/t/restarting-pyfr-simulation-of-same-mesh-with-different-partition/1289 "2025-08-28T12:23:54Z")
I have a PyFR case setup that runs and restarts well without any issue when using the same mesh file (.pyfrm). However, I am trying to restart the simulation from the latest solution file of the same mesh with an increas… --- ## [Error importing .msh to .pyfrm](https://pyfr.discourse.group/t/error-importing-msh-to-pyfrm/1216)
**Author:** [@Olaf](https://pyfr.discourse.group/u/Olaf)\ **Replies:** 3\ **Last updated:** [31 July 2025 15:11 UTC](https://pyfr.discourse.group/t/error-importing-msh-to-pyfrm/1216 "2025-07-31T15:11:01Z")
I am new to PyFR and CFD in general and I am trying to a mesh for my final year project. If anyone knows this error please let me know. (pyfr-venv) juanpablo@Z390-AORUS-PRO:~/pyfr-venv/PyFR-Test-Cases-main/intakemodel2d… --- ## [Error while importing the mesh: KeyError](https://pyfr.discourse.group/t/error-while-importing-the-mesh-keyerror/1248)
**Author:** [@Luca\_P](https://pyfr.discourse.group/u/Luca_P)\ **Replies:** 10\ **Last updated:** [19 July 2025 14:15 UTC](https://pyfr.discourse.group/t/error-while-importing-the-mesh-keyerror/1248 "2025-07-19T14:15:50Z")
Hello, I was trying to simulate the flow around an airfoil using a 3D mesh obtained by extruding a 2D mesh along the z-axis. However, during the execution of the command pyfr import mesh.msh mesh.pyfrm, the following er… --- ## [Error partitioning the mesh](https://pyfr.discourse.group/t/error-partitioning-the-mesh/1261)
**Author:** [@arun-s-p](https://pyfr.discourse.group/u/arun-s-p)\ **Replies:** 5\ **Last updated:** [15 May 2025 11:32 UTC](https://pyfr.discourse.group/t/error-partitioning-the-mesh/1261 "2025-05-15T11:32:34Z")
I am trying to partition the 2D Euler vortex test case with Metis 5.2.1, by pyfr partition add -p metis euler-vortex.pyfrm 2 . I get the error: ValueError: Invalid partitioning name Has the command for partitioning ch… --- ## [Can pyFR be used to solve moving boundary problems?](https://pyfr.discourse.group/t/can-pyfr-be-used-to-solve-moving-boundary-problems/1113)
**Author:** [@studyhardhardhard](https://pyfr.discourse.group/u/studyhardhardhard)\ **Replies:** 2\ **Last updated:** [22 April 2025 10:26 UTC](https://pyfr.discourse.group/t/can-pyfr-be-used-to-solve-moving-boundary-problems/1113 "2025-04-22T10:26:08Z")
In CFD simulations, moving boundary problems often arise due to the boundary movement causing changes in the flow field over time, which requires the mesh to change over time as well. The most common method for this is t… --- ## [Issue with Mesh (msh to pyfrm)](https://pyfr.discourse.group/t/issue-with-mesh-msh-to-pyfrm/1232)
**Author:** [@c.alonsoa](https://pyfr.discourse.group/u/c.alonsoa)\ **Replies:** 4\ **Last updated:** [24 March 2025 13:40 UTC](https://pyfr.discourse.group/t/issue-with-mesh-msh-to-pyfrm/1232 "2025-03-24T13:40:58Z")
I aim to perform simulations of an airfoil profile. When creating the mesh in ‘Gmsh’, I try to refine it as much as possible and properly define the physical groups. To ensure accuracy, I use the example meshes published… --- ## [Does PyFR only support Gmsh? Can it support VTK or other mesh format?](https://pyfr.discourse.group/t/does-pyfr-only-support-gmsh-can-it-support-vtk-or-other-mesh-format/1207)
**Author:** [@Lattice2012](https://pyfr.discourse.group/u/Lattice2012)\ **Replies:** 1\ **Last updated:** [16 January 2025 12:18 UTC](https://pyfr.discourse.group/t/does-pyfr-only-support-gmsh-can-it-support-vtk-or-other-mesh-format/1207 "2025-01-16T12:18:04Z")
Does PyFR only support Gmsh? Can it support VTK or other mesh format? --- ## [Full Unstructured Quad Mesh Pointwise](https://pyfr.discourse.group/t/full-unstructured-quad-mesh-pointwise/914)
**Author:** [@Frankx9](https://pyfr.discourse.group/u/Frankx9)\ **Replies:** 5\ **Last updated:** [19 October 2024 05:22 UTC](https://pyfr.discourse.group/t/full-unstructured-quad-mesh-pointwise/914 "2024-10-19T05:22:46Z")
Hi I was looking at your case of the NACA0021 and I saw that your grids are unstructured to fill the domain but are made of pure hex elements. How did you accomplish that in pointwise? Regards --- ## [AttributeError: 'GmshReader' object has no attribute '\_nodepts'](https://pyfr.discourse.group/t/attributeerror-gmshreader-object-has-no-attribute-nodepts/1168)
**Author:** [@matheushrla](https://pyfr.discourse.group/u/matheushrla)\ **Replies:** 6\ **Last updated:** [15 September 2024 17:28 UTC](https://pyfr.discourse.group/t/attributeerror-gmshreader-object-has-no-attribute-nodepts/1168 "2024-09-15T17:28:26Z")
Hello, everyone. I’m new using PyFR and also new in CFD simulations. I’m trying to run a NACA0012 case using a mesh made by myself, but I get “AttributeError: ‘GmshReader’ object has no attribute ‘\_nodepts’” when I’m im… --- ## [Sod shock tube and shu osher problem](https://pyfr.discourse.group/t/sod-shock-tube-and-shu-osher-problem/1132)
**Author:** [@Frankx9](https://pyfr.discourse.group/u/Frankx9)\ **Replies:** 2\ **Last updated:** [21 July 2024 10:08 UTC](https://pyfr.discourse.group/t/sod-shock-tube-and-shu-osher-problem/1132 "2024-07-21T10:08:18Z")
Hello, would it be possible to share the .msh and the .ini file for the sod shock tube problem and the shu-osher test cases to test the shock capturing scheme? Thanks in advance, Best regards --- ## [Unpaired Faces in Higher Order Mesh](https://pyfr.discourse.group/t/unpaired-faces-in-higher-order-mesh/815)
**Author:** [@Pablo](https://pyfr.discourse.group/u/Pablo)\ **Replies:** 7\ **Last updated:** [10 June 2024 13:20 UTC](https://pyfr.discourse.group/t/unpaired-faces-in-higher-order-mesh/815 "2024-06-10T13:20:52Z")
Hello, I have encountered a problem. When I am trying to export my Pointwise mesh in higher order, I cannot import it to PyFR anymore. I have tried many settings and simplified meshes, but cannot get anything higher ord… --- ## [Memory on CUDA GPU](https://pyfr.discourse.group/t/memory-on-cuda-gpu/1093)
**Author:** [@wgbb](https://pyfr.discourse.group/u/wgbb)\ **Replies:** 1\ **Last updated:** [22 May 2024 07:50 UTC](https://pyfr.discourse.group/t/memory-on-cuda-gpu/1093 "2024-05-22T07:50:43Z")
Hello, everybody. I’d like to ask you about a memory problem during cuda calculations, I’m experiencing a lack of video memory. To give a brief description, when I do a calculation with a 3D mesh of 7 million with orde… --- ## [Importing from msh to pyfrm](https://pyfr.discourse.group/t/importing-from-msh-to-pyfrm/1082)
**Author:** [@dav\_ax](https://pyfr.discourse.group/u/dav_ax)\ **Replies:** 2\ **Last updated:** [8 May 2024 14:03 UTC](https://pyfr.discourse.group/t/importing-from-msh-to-pyfrm/1082 "2024-05-08T14:03:04Z")
Hello to everyone. Whenever I convert a file from msh to pyfrm, the program shows errors such as KeyError pyfr 7, 4348 or similar. Boundary conditions have been adjusted on gmsh and I am using a 4.108 ASCII version 4 fo… --- ## [Apply symmetry boundary conditions at the three domain face](https://pyfr.discourse.group/t/apply-symmetry-boundary-conditions-at-the-three-domain-face/1070)
**Author:** [@fei](https://pyfr.discourse.group/u/fei)\ **Replies:** 9\ **Last updated:** [28 March 2024 16:13 UTC](https://pyfr.discourse.group/t/apply-symmetry-boundary-conditions-at-the-three-domain-face/1070 "2024-03-28T16:13:25Z")
Hello, I applied symmetry boundary conditions at the three domain face, but the error appears: ValueError Unpaired periodic boundary in mesh. can’t pyfr set symmetry boundary conditions at the three domain face? --- ## [About residual convergence](https://pyfr.discourse.group/t/about-residual-convergence/1044)
**Author:** [@wgbb](https://pyfr.discourse.group/u/wgbb)\ **Replies:** 3\ **Last updated:** [8 March 2024 15:30 UTC](https://pyfr.discourse.group/t/about-residual-convergence/1044 "2024-03-08T15:30:31Z")
Hello everyone, I have a confusing question about residual convergence. When I use the first-order NS equation to calculate, the residual can reach 0.01. However, when I increase the order to 2nd and 3rd, the residual c… --- ## [Repartitioning a pyfrm mesh](https://pyfr.discourse.group/t/repartitioning-a-pyfrm-mesh/940)
**Author:** [@luli](https://pyfr.discourse.group/u/luli)\ **Replies:** 4\ **Last updated:** [12 October 2023 07:36 UTC](https://pyfr.discourse.group/t/repartitioning-a-pyfrm-mesh/940 "2023-10-12T07:36:22Z")
In the materials provided in the JCP-2019 paper（Locally adaptive pseudo-time stepping for high-order Flux Reconstruction）, the mesh file pyfrm has been divided into 4 blocks for multi GPU run, but I only have one GPU. Ho… --- ## [Grid order and its relevance to pyFR](https://pyfr.discourse.group/t/grid-order-and-its-relevance-to-pyfr/902)
**Author:** [@studyhardhardhard](https://pyfr.discourse.group/u/studyhardhardhard)\ **Replies:** 4\ **Last updated:** [4 September 2023 09:00 UTC](https://pyfr.discourse.group/t/grid-order-and-its-relevance-to-pyfr/902 "2023-09-04T09:00:25Z")
Hello, everyone! There is no connection whatsoever between the order of curvature used for a grid and the solver order. I can understand these, but I still have some questions. For second-order curved grids, there are… --- ## [Periodic boundary condition support](https://pyfr.discourse.group/t/periodic-boundary-condition-support/155)
**Author:** [@Frank\_Muldoon](https://pyfr.discourse.group/u/Frank_Muldoon)\ **Replies:** 6\ **Last updated:** [16 August 2023 11:18 UTC](https://pyfr.discourse.group/t/periodic-boundary-condition-support/155 "2023-08-16T11:18:40Z")
Hello all, From the documentation, it seems that PyFR itself does not itself create periodic boundary conditions (i.e. define the required connectivity) and hence such must be specified already in the mesh file. In thi… --- ## [Is PyFR capable of using Overset Mesh?](https://pyfr.discourse.group/t/is-pyfr-capable-of-using-overset-mesh/889)
**Author:** [@RDarshan](https://pyfr.discourse.group/u/RDarshan)\ **Replies:** 1\ **Last updated:** [1 August 2023 09:57 UTC](https://pyfr.discourse.group/t/is-pyfr-capable-of-using-overset-mesh/889 "2023-08-01T09:57:50Z")
I want to solve supersonic external flow problems using PyFR, Can I use overset mesh in PyFR? I noticed it in the future roadmap, I want to know whether its available now. Thanks. --- ## [How to do a simple test of pyFR on grids of different orders?](https://pyfr.discourse.group/t/how-to-do-a-simple-test-of-pyfr-on-grids-of-different-orders/880)
**Author:** [@studyhardhardhard](https://pyfr.discourse.group/u/studyhardhardhard)\ **Replies:** 7\ **Last updated:** [18 July 2023 01:32 UTC](https://pyfr.discourse.group/t/how-to-do-a-simple-test-of-pyfr-on-grids-of-different-orders/880 "2023-07-18T01:32:24Z")
Hello everyone, as a newcomer to pyFR, I have some questions regarding the configuration of the solver. My main concern is how to set the solver’s order based on the grid order in the msh file. Due to my lack of knowle… --- ## [High order mesh generation in 2D with pointwise](https://pyfr.discourse.group/t/high-order-mesh-generation-in-2d-with-pointwise/869)
**Author:** [@joseph](https://pyfr.discourse.group/u/joseph)\ **Replies:** 9\ **Last updated:** [7 July 2023 23:07 UTC](https://pyfr.discourse.group/t/high-order-mesh-generation-in-2d-with-pointwise/869 "2023-07-07T23:07:34Z")
Hi, In 3d pointwise makes a block and workes with q1 to q4 with no problem. I tried 18.4 and 18.6 also 2022.2 version with Elevate stuff. In 2d pointwise makes high order mesh?, is it available? For 2d I could use gms… --- ## [High order curved mesh visualization](https://pyfr.discourse.group/t/high-order-curved-mesh-visualization/453)
**Author:** [@subutai](https://pyfr.discourse.group/u/subutai)\ **Replies:** 10\ **Last updated:** [16 August 2021 12:12 UTC](https://pyfr.discourse.group/t/high-order-curved-mesh-visualization/453 "2021-08-16T12:12:47Z")
Hi all, I have been trying to fit high-order curved faces to geometries. I use PointwiseV18.3R2 for this, because I can use it, and don’t want to bother with learning Gmsh at the moment. The problem is, I don’t know if … --- ## [How to convert Fluent .msh file to PyFR input .msh file?](https://pyfr.discourse.group/t/how-to-convert-fluent-msh-file-to-pyfr-input-msh-file/858)
**Author:** [@Avinash](https://pyfr.discourse.group/u/Avinash)\ **Replies:** 4\ **Last updated:** [23 June 2023 14:11 UTC](https://pyfr.discourse.group/t/how-to-convert-fluent-msh-file-to-pyfr-input-msh-file/858 "2023-06-23T14:11:30Z")
Hi All, I have fluent .msh case file but it not working in PyFR. How can i convert fluent .msh file to PyFR input .msh file? Thanks you [Next page](https://pyfr.discourse.group/tag/mesh/3.md?match_all_tags=true&page=1&tags%5B%5D=mesh)