Drughi Posted July 5, 2018 Share Posted July 5, 2018 Hello, I'm currently trying to recreate the masterclass "Building Fluid Solvers from Scratch". The Problem is, that my density field gets advected only in the first frame. Am I missing something? I attached the file. Smoke Solver from Scratch.hip Quote Link to comment Share on other sites More sharing options...
Stephen Moroz Posted July 5, 2018 Share Posted July 5, 2018 (edited) Hey, I took a look at your file and found the problem - on the sopscalarfield node in your DOP network, you had the default operation on "set always". This meant that with every frame, it reset the density field to being equal to the "Source_Density" null in SOPs, hence stopping the solvers from having any effect. If you put it back to "Set Initial" then it will all start working correctly Edited July 5, 2018 by Stephen Moroz 1 Quote Link to comment Share on other sites More sharing options...
Drughi Posted July 5, 2018 Author Share Posted July 5, 2018 Awesome man! What stupid mistake. Thanks alot! <3 Quote Link to comment Share on other sites More sharing options...
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