Learning Forum

[misaka.leee]

Hi, all

I am using a dynamic mesh to simulate compressor operation, with the flow entering a porous media region after passing through a long connecting pipe. The model works well at thermal equilibrium, but I receive the following warning after enabling thermal non-equilibrium:

Warning: The non-equilibrium thermal model is not supported for zones that undergo (or are adjacent to zones that undergo) changes to the geometry or mesh.

I checked the manual and learned that non-equilibrium conditions are incompatible with dynamic meshing due to node movement issues. However, my dynamic mesh boundary uses a rigid body layering mode, which theoretically shouldn't affect the mesh in the porous media region, and the two zones are not adjacent.

How should I handle this? Or can I ignore this warning, as it doesn't seem to be causing any problems?

I have tried setting both the solid and fluid phases in the porous media region to be stationary, but I still get this warning.

Thanks

[misaka.leee]

I found that when I don't use dynamic meshing, it only displays  "Establishing Connectivity of zones"  once during the initialization step to match the fluid domain and the porous domain.

However, when I use dynamic meshing, it gives the warning at the beginning of each calculation step, and then performs a mesh association. Eventually, the calculation suddenly stopped after one of these warnings. I guess there might be a bug occurring during the mesh association process.