Dynamic Mesh: No Remeshing Happening on Axis Boundaries
I have a 2D axisymmetric rectangular mesh with deforming zones on either sides of a rotating diaphragm as shown.
The bottom boundary is an axis and the problem is axisymmetric. I have enabled smoothing and remeshing.
The diaphragm motion is via a UDF - it checks out.
The issue is, when I define the bottom boundary as "axis" and axisymmetric 2D space, then remeshing does not happen for the axis and FLUENT throws a 'Dynamic Mesh Update Failed' error.
If I define the bottom boundary as "symmetry" with Planar 2D space, then remeshing happens without any issue, but the flow then does not move past the diaphragm as shown below.
The above image was taken midway during the course of diaphragm opening.
So then I had to revert to using axis boundary condition with axisymmetric 2D space.
I think FLUENT does not do remeshing on axis boundaries. If so, then how can I resolve this issue?
Would someone please help me on how to proceed with dynamic mesh in this case? I am out of ideas and I've been stuck with this for over a month now!!