Method to Prevent Mesh Overlap for Rotating Movement

    • aCamb

      I'm using Fluent to try and rotate two rigid bodies around a fixed point, and I've currently been able to use UDFs to define the rigid body motion and dynamic meshing to account for the mesh movement (see sketch right below for a visual). 

      However, as I'm updating the mesh, I notice that the boundary of the fixed center and rotating arm overlap, and this is causing a negative volume error (see image below with a mesh element between the center and arm).  I have already tried reducing the timestep, but this hasn't solved the issue completely.  Is there a better way to draw my geometry, define my boundaries, update the mesh, etc. such that Fluent knows not to try and mesh between the fixed center and rotating arm? 

      Thank you for your help!

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