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March 30, 2017, 08:43 |
symmetryPlane in sHM
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#1 |
Super Moderator
Tobias Holzmann
Join Date: Oct 2010
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Hi everybody,
I have a question to you. Maybe one got to the same problem. I am meshing a complex geometry with sHM but I have problems with the symmetry planes. The faces are not 100% aligned to the patch normal and therefore I get e.g. displacements in y direction based on the surface normal direction. Question 1
Question 2
assign the symmetryPlane patch type. I get the problem, that the application tells me the following: Code:
Symmetry plane 'sym1' is not planar. At local face at (0.00702909 0.00026875 0.0282749) the normal (1 3.22739e-15 1.60222e-15) differs from the average normal (0.428571 5.18688e-16 -6.34413e-17) by 0.326531 Either split the patch into planar parts or use the symmetry patch type
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April 25, 2017, 07:58 |
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#2 |
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Kal-El
Join Date: Apr 2017
Location: Finland
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You can use the outer limits of your blockMesh to create very flat surfaces.
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April 25, 2017, 08:59 |
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#3 |
Super Moderator
Tobias Holzmann
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Hello Kai,
this will not help, or if you think, please offer an example. very flat surfaces are not flat at all. Using snappy will produce non-flat surfaces at the patches during the snap process. The solution is to move the patch points to a plane by yourself. The program which can handle that could be found in my repositories.
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April 25, 2017, 09:46 |
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#4 |
Senior Member
Kal-El
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I ment something like this https://sites.google.com/site/snappy.../cylinder-case
(inlet-boundaries, with "small blockMesh") |
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April 25, 2017, 09:59 |
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#5 |
Super Moderator
Tobias Holzmann
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Did you ever checked if the patches (inlet/outlet) could be set for symmetryPlane? In addition my geometry is a chainsaw motor block. So no simple geometry. However, thanks for your reply.
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April 25, 2017, 10:11 |
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#6 |
Super Moderator
Tobias Holzmann
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Blog Entries: 6
Rep Power: 52 |
Okay I checked your geometry ...
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April 25, 2017, 10:19 |
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#7 |
Senior Member
Kal-El
Join Date: Apr 2017
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That is not my geometry. Just something I found.
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