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[snappyHexMesh] Generating Surface Layers Around Winglet Airfoil |
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#1 | |
New Member
Alex
Join Date: Feb 2024
Posts: 6
Rep Power: 2 ![]() |
Hello everyone,
I am encountering an issue while trying to simulate a winglet using OpenFOAM. Specifically, my problem lies with SnappyHexMesh, as it is failing to generate surface layers around the entire airfoil surface of the winglet. This is hindering the accuracy and reliability of my simulation results. To provide some context, I am attempting to model a winglet using OpenFOAM for computational fluid dynamics (CFD) analysis. However, despite my efforts, SnappyHexMesh seems to be neglecting certain portions of the airfoil surface when generating surface layers. I have attached an image highlighting the problem for better understanding. I have thoroughly reviewed my mesh settings and boundary conditions, but I am unable to pinpoint the exact cause of this issue. I have ensured that the geometry of the winglet is correctly defined and free from errors. I would greatly appreciate any insights or suggestions from the community regarding how to troubleshoot and resolve this problem with SnappyHexMesh. If anyone has encountered a similar issue or has expertise in meshing with OpenFOAM, your guidance would be invaluable. Thank you in advance for your assistance. I look forward to your responses and insights. Cheers Quote:
![]() ![]() Last edited by Snacker; March 10, 2024 at 11:23. Reason: changed pic links |
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#2 |
Senior Member
M
Join Date: Dec 2017
Posts: 704
Rep Power: 13 ![]() |
SnappyHexMesh is notorioulsy unstable when it comes to boundary layers. You will find a high fraction of threads in this forum is about problems with introducing high quality layers. You can look through them to find some general recommendations. AFAIK people who really depend on hq layers choose other mesh generators like Fluent Meshing, ICEM, ... .
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#3 | |
New Member
Alex
Join Date: Feb 2024
Posts: 6
Rep Power: 2 ![]() |
Quote:
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#4 |
Senior Member
Yann
Join Date: Apr 2012
Location: France
Posts: 1,257
Rep Power: 29 ![]() ![]() |
Hello,
As AtoHM already pointed out, layers addition is not snappy's strong suit. You may want to try the OpenCFD branch (openfoam.com) which allows layer-by-layer addition and alternative mesh motion solver. https://www.openfoam.com/news/main-n...#snappy_layers In my experience it's not perfect but it can significantly improve layer coverage. |
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#5 |
Senior Member
Join Date: Dec 2021
Posts: 268
Rep Power: 6 ![]() |
Hey,
I second Yann's comment about the layer-by-layer addition, and would like to mention that someone posted their conclusions about the best settings for snappyHexMesh. You can find the thread here. I have had good results with the layer coverage with these settings. |
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Tags |
airfoil, snappy, snappyhexmesh, winglet |
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