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Pairwise force SPH model for real-time multi-interaction applications

Yang, Tao, Martin, Ralph, Lin, Ming C., Chang, Jialin and Hu, Shi-Min ORCID: 2017. Pairwise force SPH model for real-time multi-interaction applications. IEEE Transactions on Visualization and Computer Graphics 23 (10) 10.1109/TVCG.2017.2706289

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In this paper, we present a novel pairwise-force smoothed particle hydrodynamics (PF-SPH) model to enable simulation 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 types 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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Computer Science & Informatics
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
ISSN: 1077-2626
Date of First Compliant Deposit: 2 January 2018
Date of Acceptance: 14 May 2017
Last Modified: 08 May 2023 09:37

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