A heterogeneous CPUGPU parallel approach to a multigrid Poisson solver for incompressible fluid simulation

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One of the major obstacles in incompressible fluid simulations is the projection step that enforces zero divergence of the velocity field. We propose a novel heterogeneous CPUGPU parallel multigrid Poisson solver that decomposes the high-frequency components of the residual field using a wavelet decomposition and conducts an additional smoothing process on them, using the CPU, while the GPU is performing projection at the coarsest level. In example animations of smoke and turbulent flow with thermal buoyancy, this additional smoothing improves the accuracy of the parallel multigrid Poisson solver in a single multigrid cycle and reduces the number of multigrid cycles required to reach a specified accuracy. Copyright (c) 2013 John Wiley & Sons, Ltd.
Publisher
WILEY-BLACKWELL
Issue Date
2013-05
Language
English
Article Type
Article
Keywords

ANIMATION; LIQUIDS; SMOKE; MESH

Citation

COMPUTER ANIMATION AND VIRTUAL WORLDS, v.24, no.3-4, pp.185 - 193

ISSN
1546-4261
DOI
10.1002/cav.1498
URI
http://hdl.handle.net/10203/174727
Appears in Collection
GCT-Journal Papers(저널논문)
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