Restart simulation with different mesh

[Tsubasa]

Hello,

I just want to know if it is possible to restart with a different mesh.

I think it is possible because there are some options in GUI about different mesh.

In my case, the calculation procedure is the followings:
1. Flow simulation with a coarse mesh to get average flow.
2. Scalar transport with a refine mesh based on an average flow field.

In the option of "Different mesh" in "Start/Restart" in GUI,
is it ok to select "mesh_input? Or do I have to select "mesh_output"?

Best regards,
Tsubasa

[Yvan Fournier]

Hello,

The name can e either mesh_input or mesh_output depending on the preprocessing stages you had. In any case, it must define the mesh which matches the restart files.

Regards,

Yvan

[Antech]

Yes, it's simple and works for most cases if there is no divergence due to mesh change (you can use Upwind scemes for all variable on first restart iterations to stabilize).
You can find mesh_input.csm file in previous run checkpoint directory you interpolate from.