Rigid fluid: animating the interplay between rigid bodies and fluid
Mark Carlson, Peter J. Mucha, Greg Turk
ACM Transactions on Graphics, 23(3), August 2004, pp. 377-384.

Copyright: © 2004 Association for Computing Machinery

ISBN / ISSN: ISSN 0730-0301

Abstract

We present the Rigid Fluid method, a technique for animating the interplay between rigid bodies and viscous incompressible fluid with free surfaces. We use distributed Lagrange multipliers to ensure two-way coupling that generates realistic motion for both the solid objects and the fluid as they interact with one another. We call our method the rigid fluid method because the simulator treats the rigid objects as if they were made of fluid. The rigidity of such an object is maintained by identifying the region of the velocity field that is inside the object and constraining those velocities to be rigid body motion. The rigid fluid method is straightforward to implement, incurs very little computational overhead, and can be added as a bridge between current fluid simulators and rigid body solvers. Many solid objects of different densities (e.g., wood or lead) can be combined in the same animation.

Keywords

computational fluid dynamics, physically based animation, rigid bodies, two-way coupling

Online Link: http://doi.acm.org/10.1145/1015706.1015733
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BibTeX Citation
  @article{Carlson:2004:RFA,
    title = "Rigid fluid: animating the interplay between rigid bodies and fluid",
    author = "Mark Carlson and Peter J. Mucha and Greg Turk",
    journal = "ACM Transactions on Graphics",
    volume = 23,
    number = 3,
    month = aug, 
    year = 2004,
    pages = "377--384",
  }