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Volume Displacement on Rest

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I'm trying to add some detail to a smoke sim  - logically it feels like I should be able to displace/multiply noise into the density using the rest field but I don't know how to use it in the volume vop. Can someone give me some clues?

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Take a look inside the Pyro Shader... they're using Dual Rest in there internally.

It looks like you're running an older version of Houdini, but in 16.0 at least, there's a VOP called the Dual Rest Solver, which handles a lot of things for you. It outputs a struct-type channel called "dualrest" which the Unified Noise VOP is capable of reading natively. In previous versions the exact implementation might be a little different, but the Pyro Shader is still the standard model you should be looking at.

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