Pairwise Force SPH Model for Real-Time Multi-Interaction Applications

Tao Yang Tsinghua University Ralph R. Martin Cardiff University Ming C. Lin University of North Carolina at Chapel Hill Jian Chang Bournemouth University Shi-Min Hu Tsinghua University

Mathematical Physics mathscidoc:1709.22001

IEEE Transactions on Visualization and Computer Graphics, 2017
In this paper, we present a novel pairwise-force smoothed particle hydrodynamics (PF-SPH) model to allow modeling of various interactions at interfaces in real time. Realistic capture of interactions at interfaces is a challenging problem for SPH-based simulations, especially for scenarios involving multiple interactions at different interfaces. Our PF-SPH model can readily handle multiple kinds of interactions simultaneously in a single simulation; its basis is to use a larger support radius than that used in standard SPH. We adopt a novel anisotropic filtering term to further improve the performance of interaction forces. The proposed model is stable; furthermore, it avoids the particle clustering problem which commonly occurs at the free surface. We show how our model can be used to capture various interactions. We also consider the close connection between droplets and bubbles, and show how to animate bubbles rising in liquid as well as bubbles in air. Our method is versatile, physically plausible and easy-to-implement. Examples are provided to demonstrate the capabilities and effectiveness of our approach.
Smoothed particle hydrodynamics (SPH), pairwise force, surface tension, bubble animation, fluid simulation
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@inproceedings{tao2017pairwise,
  title={Pairwise Force SPH Model for Real-Time Multi-Interaction Applications},
  author={Tao Yang, Ralph R. Martin, Ming C. Lin, Jian Chang, and Shi-Min Hu},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170901105346742828816},
  booktitle={IEEE Transactions on Visualization and Computer Graphics},
  year={2017},
}
Tao Yang, Ralph R. Martin, Ming C. Lin, Jian Chang, and Shi-Min Hu. Pairwise Force SPH Model for Real-Time Multi-Interaction Applications. 2017. In IEEE Transactions on Visualization and Computer Graphics. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170901105346742828816.
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