A Unified Particle System Framework for Multi-Phase, Multi-Material Visual Simulations

Tao Yang Tsinghua University Jian Chang Bournemouth University Ming C. Lin UNC Ralph R. Martin Cardiff University Jian J. Zhang Bournemouth University Shi-Min Hu Tsinghua University

Fluid Dynamics and Shock Waves Mathematical Physics mathscidoc:1808.14001

ACM Transactions on Graphics, 36, (6), 224, 2017
We introduce a unified particle framework which integrates the phase-field method with multi-material simulation to allow modeling of both liquids and solids, as well as phase transitions between them. A simple elastoplastic model is used to capture the behavior of various kinds of solids, including deformable bodies, granular materials, and cohesive soils. States of matter or phases, particularly liquids and solids, are modeled using the non-conservative Allen-Cahn equation. In contrast, materials—made of different substances—are advected by the conservative Cahn-Hilliard equation. The distributions of phases and materials are represented by a phase variable and a concentration variable, respectively, allowing us to represent commonly observed fluid-solid interactions. Our multi-phase, multi-material system is governed by a unified Helmholtz free energy density. This framework provides the first method in computer graphics capable of modeling a continuous interface between phases. It is versatile and can be readily used in many scenarios that are challenging to simulate. Examples are provided to demonstrate the capabilities and effectiveness of this approach.
Multi-Material Simulation, Elastoplastic, Smoothed Particle Hydrodynamics, Phase Transition
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@inproceedings{tao2017a,
  title={A Unified Particle System Framework for Multi-Phase, Multi-Material Visual Simulations },
  author={Tao Yang, Jian Chang, Ming C. Lin, Ralph R. Martin, Jian J. Zhang, and Shi-Min Hu},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20180817221052591842146},
  booktitle={ACM Transactions on Graphics},
  volume={36},
  number={6},
  pages={224},
  year={2017},
}
Tao Yang, Jian Chang, Ming C. Lin, Ralph R. Martin, Jian J. Zhang, and Shi-Min Hu. A Unified Particle System Framework for Multi-Phase, Multi-Material Visual Simulations . 2017. Vol. 36. In ACM Transactions on Graphics. pp.224. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20180817221052591842146.
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