Realistic simulation of mixing fluids |
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Authors: | Shiguang Liu Qiguang Liu Qunsheng Peng |
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Affiliation: | 1. School of Computer Science and Technology, Tianjin University, Tianjin, China 2. State Key Lab of Virtual Reality Technology and System, Beihang University, Beijing, 100191, China 3. State Key Lab of CAD&CG, Zhejiang University, Hangzhou, 310058, China
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Abstract: | Recently, simulation of mixing fluids, for which wide applications can be found in multimedia, computer games, special effects,
virtual reality, etc., is attracting more and more attention. Most previous methods focus separately on binary immiscible
mixing fluids or binary miscible mixing fluids. Until now, little attention has been paid to realistic simulation of multiple
mixing fluids. In this paper, based on the solution principles in physics, we present a unified framework for realistic simulation
of liquid–liquid mixing with different solubility, which is called LLSPH. In our method, the mixing process of miscible fluids
is modeled by a heat-conduction-based Smooth Particle Hydrodynamics method. A special self-diffusion coefficient is designed
to simulate the interactions between miscible fluids. For immiscible fluids, marching-cube-based method is adopted to trace
the interfaces between different types of fluids efficiently. Then, an optimized spatial hashing method is adopted for simulation
of boundary-free mixing fluids such as the marine oil spill. Finally, various realistic scenes of mixing fluids are rendered
using our method. |
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