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

Yang, T., Chang, J., Lin, M.C., Martin, R.R., Zhang, J. J. and Hu, S-M., 2017. A Unified Particle System Framework for Multi-Phase, Multi-Material Visual Simulations. In: SIGGRAPH Asia 2017, 27-30 November 2017, Bangkok, Thailand.

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TYangSIGAsia.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.


DOI: 10.1145/3130800.3130882


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 elasto-plastic 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.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Published in ACM Transactions on Graphics, Vol. 36, No. 6, Article 224. Publication date: November 2017
Uncontrolled Keywords:Phase-Field ; Multi-Material Simulation ; Elastoplastic ; Smoothed Particle Hydrodynamics ; Phase Transition
Group:Faculty of Media & Communication
ID Code:30155
Deposited By: Symplectic RT2
Deposited On:03 Jan 2018 11:35
Last Modified:14 Mar 2022 14:08


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