When I use ascent in situ vis with a CFD or CFD-DEM simulation, the output pngs are indexed by the fluid time step. When I run a pure granular simulation, they are indexed by a separate number-of-calls-to-ascent index. I don’t know if it matters. I don’t know if I even care… I’m just seeing it happen right now and wondering if we should try and fix it. The “ascent index” is potentially problematic because it starts back over at 0 if you restart (a gran sim).
It looks like the call that sets up field variables is where we define the index (step), then we add particle data. There is a pending merge request (MR1413) that should fix the issue, but it needs testing.
Currently MFIX-Exa skips MultiFab (field) data when the fluid is not solved. MR1413 always sets up volfrac, the geometric volume fraction MultiFab, so the idex can be defined.
oh, does that mean that volfrac could now be used in ascent in granular sims? that would be nice
Yes it does. You’d have volfrac available to approximate geometry.
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