The paper “Accelerating Eulerian Fluid Simulation With Convolutional Networks” and its source code is available here:
The mentioned previous work has used an SPH-based Lagrangian simulation, performed the regression with regression forests, and the process also has included a fair amount of feature engineering. It is an excellent piece of work by the name “Data-driven Fluid Simulations using Regression Forests” and is a highly recommended read:
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