March 23, 2022 at 6:44 amighoshSubscriber
While doing a Hydrodynamic Diffraction Analysis in Workbench; I note that the Mesh Based and Mass Based displacement has difference of 198.8%. The absolute values are quite close but the mesh based displacement is negative which is incorrect. I have a feeling that there is a problem with coordinate axis. Did anyone face similar issues? How did you resolve it. Please help me.March 23, 2022 at 4:05 pmMike PettitAnsys Employee
A negative mesh-based displacement means that the surface normals of your vessel are pointing inwards, instead of outwards. A quick way to check this is to turn on part highlighting (View > Highlight Selected Parts and Bodies) then select the Part in the Outline tree. The outside surfaces should be highlighted in bright green:
If the surface normals are wrong, then the insides will be bright green and the outsides will just show green edges:
If this is the case, you'll need to go back into SpaceClaim or DesignModeler and flip the surface normals.
I hope this helps!
March 24, 2022 at 4:27 amighoshSubscriberThanks Mike.
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