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Flow Around Surface

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Well...I generally do this kind of effect by using a sop-solver inside POP DOP to ray (using VEX to ray instead of ray-sop -which is slower) the particles back to the surface and recalculating their velocity in each timestep. I use SDFs for more advanced control. This workflow works great for me. So there you have one method of mimicking the "Flow Around Surface" compound of Softimage.

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