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Ghost SPH for Animating Water
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DOI：10.1145/2185520.2185557.png)
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摘要
En 中文
We propose a new ghost fluid approach for free surface and solid boundary conditions in Smoothed Particle Hydrodynamics (SPH) liquid simulations. Prior methods either suffer from a spurious numerical surface tension artifact or drift away from the mass conservation constraint, and do not capture realistic cohesion of liquid to solids. Our Ghost SPH scheme resolves this with a new particle sampling algorithm to create a narrow layer of ghost particles in the surrounding air and solid, with careful extrapolation and treatment of fluid variables to reflect the boundary conditions. We also provide a new, simpler form of artificial viscosity based on XSPH. Examples demonstrate how the new approach captures real liquid behaviour previously unattainable by SPH with very little extra cost.
Keyword:
Smoothed Particles Hydrodynamics
SPH
free surface
boundary conditions
volume sampling
liquids
animation
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4.7K
被引数:
3.6W
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