Low Viscosity Flow Simulations for Animation

Molemaker, Jeroen; Cohen, Jonathan M.; Patel, Sanjit; Noh, Jonyong

Low Viscosity Flow Simulations for Animation

Files

009-018.pdf (276.15 KB)

Date

2008

Authors

Molemaker, Jeroen
Cohen, Jonathan M.
Patel, Sanjit
Noh, Jonyong

Publisher

The Eurographics Association

Abstract

We present a combination of techniques to simulate turbulent fluid flows in 3D. Flow in a complex domain is modeled using a regular rectilinear grid with a finite-difference solution to the incompressible Navier-Stokes equations. We propose the use of the QUICK advection algorithm over a globally high resolution grid. To calculate pressure over the grid, we introduce the Iterated Orthogonal Projection (IOP) framework. In IOP a series of orthogonal projections ensures that multiple conditions such as non-divergence and boundary conditions arising through complex domains shapes or moving objects will be satisfied simultaneously to specified accuracy. This framework allows us to use a simple and highly efficient multigrid method to enforce non-divergence in combination with complex domain boundary conditions. IOP is amenable to GPU implementation, resulting in over an order of magnitude improvement over a CPU-based solver. We analyze the impact of these algorithms on the turbulent energy cascade in simulated fluid flows and the resulting visual quality

        @inproceedings{:10.2312/SCA/SCA08/009-018
,
booktitle = {Eurographics/SIGGRAPH Symposium on Computer Animation
},
editor = {Markus Gross and Doug James
},
title = {{Low Viscosity Flow Simulations for Animation
}},
author = {Molemaker, Jeroen and 
Cohen, Jonathan M. and 
Patel, Sanjit and 
Noh, Jonyong
},
year = {2008
},
publisher = {The Eurographics Association
},
ISSN = {1727-5288
},
ISBN = {978-3-905674-10-1
},
DOI = {/10.2312/SCA/SCA08/009-018
}
}