[kont87]

Hello,

I have a rather large LES case, which I’d like to postprocess it via DMD.

The domain consists of ~340M hex cells, and I have no problem with solving it in parallel. Since it is not possible to post process it after the final solution (and reconstructing the domain takes too long between the time steps), I decided it’d best to perform run-time DMD. My plan is to apply it at some specific cutting plane as a starting point, however, quick research suggested that it can only be applied to regions, boundaries etc.
Is there any way to perform DMD on a cutting plane?
There is a tutorial, and it maps the solution onto a coarser one, but, I believe it might be problematic when running in parallel.
Any suggestions are appreciated.
Regards.
S.

[kont87]

Originally Posted by kont87

Hello,

I have a rather large LES case, which I’d like to postprocess it via DMD.

The domain consists of ~340M hex cells, and I have no problem with solving it in parallel. Since it is not possible to post process it after the final solution (and reconstructing the domain takes too long between the time steps), I decided it’d best to perform run-time DMD. My plan is to apply it at some specific cutting plane as a starting point, however, quick research suggested that it can only be applied to regions, boundaries etc.
Is there any way to perform DMD on a cutting plane?
There is a tutorial, and it maps the solution onto a coarser one, but, I believe it might be problematic when running in parallel.
Any suggestions are appreciated.
Regards.
S.

Okay, I found some answers, which led to another. It can only be applied as a volumetric region, having a thickness of one cell. However, my main domain is already decomposed and I have to decompose the coarse, DMD-specific domain the same way as the main was, with the same number of processors. My main domain is genetated via Fluent and the coarse region is generated via on BlockMesh.
Is there any way to distribute/decompose a blockMesh region onto already decomposed domain?

Regards.

[mhy622]

Hello, If you have solved this problem, could you please give detailed information about the solution?

[kont87]

Originally Posted by mhy622

Hello, If you have solved this problem, could you please give detailed information about the solution?

You need to be more specific than that. Can you add controlDict lines and a description of your problem?