Fast animation of turbulence using energy transport and procedural synthesis

We present a novel technique for the animation of turbulent fluids by coupling a procedural turbulence model with a numerical fluid solver to introduce subgrid-scale flow detail. From the large-scale flow simulated by the solver, we model the production and behavior of turbulent energy using a physically motivated energy model. This energy distribution is used to synthesize an incompressible turbulent velocity field, whose features show plausible temporal behavior through a novel Lagrangian approach for advected noise. The synthesized turbulent flow has a dynamical effect on the largescale flow, and produces visually plausible detailed features on both gaseous and free-surface liquid flows. Our method is an order of magnitude faster than full numerical simulation of equivalent resolution, and requires no manual direction. CR Categories: I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling--Physically based modeling

• Type: Journal
• Year: 2008
• Where: TOG
• Authors: Rahul Narain, Jason Sewall, Mark Carlson, Ming C. Lin
• Keywords: Incompressible Turbulent Velocity, TOG 2008, Turbulent, Turbulent Fluids