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February 20, 2019 at 12:47 pm
sam_5195
SubscriberI 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:
message 1:
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.
message 2:
A mesh could not be generated using the current meshing options and settings
message 3:
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.
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February 21, 2019 at 10:16 am
Rob
Ansys EmployeeYou'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.
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February 28, 2019 at 4:51 am
sam_5195
SubscriberThank you very much. Just to clarify do you mean there is no way around it except maybe removing all the small thicknesses in spaceclaim?
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February 28, 2019 at 12:08 pm
Rob
Ansys EmployeeNo, 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.
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February 28, 2019 at 12:12 pm
sam_5195
SubscriberThanks a lot for your answers.
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