February 20, 2019 at 12:47 pmsam_5195Subscriber
I am doing a flow analysis of solar panels and their supporting structure. It involves parts of supporting structure which are as small as 8e-04 thickness and the whole enclosure is of about 70m x70mx 10m. The problem is when i try to mesh them using edge sizing for very large edges(~10m) and very small ones with appropriate element sizes it consistently throws up three errors:
Ansys mesh the surface mesh is intersecting or close to intersecting making it difficult to create a volume mesh please adjust the mesh size or adjust the geometry to fix the problem.
A mesh could not be generated using the current meshing options and settings
The mesh generation did not complete due to poor quality elements or incorrect input.
I tried pinching, virtual topology as well as keeping the element size and max face size very low(which sometimes freezes the computer) to no avail. I am wondering whether i could remove the small edges but the thing is i intend to perform stress analysis using the flow data which probably could affect the results Any suggestions would be appreciated. Thanks.
February 21, 2019 at 10:16 amRobAnsys Employee
You're losing the small edges in the tolerance. In Fluent we use a thin wall which has no thickness or you can also remove small features. If you do need those features you need to reduce the cell sizes to fully capture them: in a domain that size you're going to get a VERY big mesh.
February 28, 2019 at 4:51 amsam_5195Subscriber
Thank you very much. Just to clarify do you mean there is no way around it except maybe removing all the small thicknesses in spaceclaim?
February 28, 2019 at 12:08 pmRobAnsys Employee
No, you can also resolve the mesh at that level: ie your cells will need to be 0.2mm. You don't have enough compute for that so I'd advise removing/simplifying the geometry.
February 28, 2019 at 12:12 pmsam_5195Subscriber
Thanks a lot for your answers.
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