A Fast Variational Framework for Accurate Solid-Fluid Coupling - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles ACM Transactions on Graphics Year : 2007

A Fast Variational Framework for Accurate Solid-Fluid Coupling


Physical simulation has emerged as a compelling animation technique, yet current approaches to coupling simulations of fluids and solids with irregular boundary geometry are inefficient or cannot handle some relevant scenarios robustly. We propose a new variational approach which allows robust and accurate solution on relatively coarse Cartesian grids, allowing possibly orders of magnitude faster simulation. By rephrasing the classical pressure projection step as a kinetic energy minimization, broadly similar to modern approaches to rigid body contact, we permit a robust coupling between fluid and arbitrary solid simulations that always gives a well-posed symmetric positive semi-definite linear system. We provide several examples of efficient fluid-solid interaction and rigid body coupling with sub-grid cell flow. In addition, we extend the framework with a new boundary condition for free-surface flow, allowing fluid to separate naturally from solids.
Vignette du fichier
paddle.jpg (9.35 Ko) Télécharger le fichier Fichier principal
Vignette du fichier
variationalFluids.pdf (3.57 Mo) Télécharger le fichier
Format : Figure, Image
Origin : Files produced by the author(s)

Dates and versions

inria-00384725 , version 1 (20-09-2010)


  • HAL Id : inria-00384725 , version 1


Christopher Batty, Florence Bertails, Robert Bridson. A Fast Variational Framework for Accurate Solid-Fluid Coupling. ACM Transactions on Graphics, 2007, Proceedings of SIGGRAPH 2007. ⟨inria-00384725⟩
282 View
1554 Download


Gmail Facebook Twitter LinkedIn More