WIP: Fluctuating MRT

This merge request copies @winterhalter's effort from the old lbmpy repository (https://i10git.cs.fau.de/software/pystencils/merge_requests/37). The main things that are still missing are tests and generalization to non-D3Q19.

I guess this still needs https://i10git.cs.fau.de/software/pystencils/merge_requests/26 to be brought forward from the old repository as it doesn't generate any RNG calls.

Fixes #2 (closed). Related to walberla/walberla#80 (closed).

changed the description

mentioned in merge request walberla/walberla!220 (merged)

added 1 commit

• 6fe5476e - fluctuating MRT

Compare with previous version

changed the description

The philox random number support is already available, https://i10git.cs.fau.de/software/pystencils/merge_requests/26 is not required any more.

Have a look at https://i10git.cs.fau.de/pycodegen/pystencils/blob/master/pystencils/rng.py#L115

Perhaps you could move the code for the fluctuating LBM into a separate source file. We can integrate it later in the high-level interface when there is a generic way to get fluctuating methods for different stencils/methods

I'll just put it into the Walberla pull request for now (walberla/walberla!220 (merged)); that's easier to work with. We can always split it off later.

closed