[Catthan]

Dear all,

I'm trying to model a 3D case of 2 Wankel rotors connected by pipes sideways.

I have my dynamic mesh UDFs right and working, non-critical skewness (0.60 in the begining up to .85 max during simulation) and a conservative time step.

At about half of the cycle or towards the end of it my model crashes with a message saying smth like
"cavity along longest edge-mesh connectivity error"

the case I am running at the moment is just air, laminar flow, energy equation off.
I am using a tetrahedral mesh from ICEM (passed all checks) with smoothing and remeshing (local cell & face).

I don't remember seeing such error during dynamic mesh preview..
Maybe some skewness warnings which I dealt with by improving the mesh and dropping the time-step.

I've only seen one unanswered similar post from 2005 so I am guessing I am missing smth very obvious.

I would really appreciate any help.

All the best,