Hey!

Quoting Jeff Lait's earlier post on the subject..

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You can turn off the Pressure forces on the Particle Fluid Solver, Turn off Collisions, and turn on integrate orientations, then add a Gas Particle Forces to the last green input of the particle fluid solver.

Then in the particle fluid object check the “Treat as Grains”. This will switch to an entirely repulsive model with the stiff springs you expect from sand. You likely need to incresae your max substeps to 100, turn on the RK Fehlberg integration, and reduce the error tolerance while you are at it.

I hope there will be a hidden shelf to make this setup straightforward for H10.
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Pretty cool!

There's a ton of point attributes that come out on the geometry with that such as contactgrain contactspherej contactspherek and contactdisplacement . I guess it's handy for debugging.. or are they intended to be manipulated afterwards?

It would be handy if this setup updated the density geometry attribute too which currently is a constant large number across all the particles

Custom grain too.. hmmmmm… any pointers there?

L