【视频摘要】《中国科学：信息科学》呈献 | Adaptive narrow band MultiFLIP ......
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Liquid-gas interactions produce many interesting phenomena such as droplets, bubbles, and the “glugging” effect of water pouring. Reproducing those phenomena, however, are difficult problems in both the computational physics and computer graphics communities. In order to simulate these two-phase phenomena, Boyd and Bridson [1] proposed the MultiFLIP method, which is an extension of the fluid implicit particle (FLIP) method introduced by Zhu and Bridson [2] and preserves all its good properties such as excellent conservation of energy with little dissipation.
Since both gas and liquid phases are involved, MultiFLIP has two challenges: first, a total number of 8n3 gas and liquid particles are required to fill the gas and liquid volumes; second, a variable coefficient Poisson equation needs to be solved on the entire domain. The two challenges significantly limit the scalability of MultiFLIP. In order to address the challenges, we present OctNBMutliFLIP. Our method incorporate narrow band and octree techniques to MultiFLIP, which were respectively proposed by Ferstl et al. [3] and Losasso et al. [4] for one-phase liquid simulations.
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