篇名 | A Hybrid Method of Modelling Solid-Induced Turbulence for Incompressible Fluids |
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卷期 | 27:2 |
作者 | Xu-Qiang Shao 、 Rong-Hua Zhang 、 Ying Yang |
頁次 | 086-099 |
關鍵字 | turbulence 、 fluid simulation 、 smoothed particle hydrodynamics 、 particle-based method 、 EI 、 MEDLINE 、 Scopus |
出刊日期 | 201607 |
The simulation of turbulent details generated around solid boundaries is crucial for visually realis-tic fluid animations. We present a new hybrid approach aimed at incorporating solid-induced turbulence into the particle-based SPH fluid solver. Based on a novel adaptive sampling method, we split particles in regions around solid boundaries to more finely capture solid-induced turbulence, and merge small particles in regions away from solid boundaries to promote efficiency. Furthermore, a turbulence production model is proposed to identify the small particles which separate from solid boundaries and obtain the vorticity information. We employ a hybrid scheme which combines coarse Euler grid and Lagrangian particle to enforce fluid incom-pressibility and solve turbulence evolution. Our method provides a physically plausible way to model turbu-lence details generated around solid boundaries in particle-based fluid solvers, from which the results demon-strate a significant improvement in the quality of visual details as compared to existing methods.