离散化
混合(物理)
周动力
计算机科学
密度比
流体模拟
机械
粒子(生态学)
流体力学
标量(数学)
流体体积法
流量(数学)
质量守恒
光滑粒子流体力学
计算流体力学
纵横比(航空)
统计物理学
物理
数学
几何学
数学分析
连续介质力学
地质学
海洋学
量子力学
光电子学
摘要
Multiple fluid simulation has raised wide research interest in recent years. Despite the impressive successes of current works, simulation of scenes containing mixing or unmixing of high-density-ratio phases using particle-based discretizations still remains a challenging task. In this paper, we propose a peridynamic mixture-model theory that stably handles high-density-ratio multi-fluid simulations. With assistance of novel scalar-valued volume flow states, a particle based discretization scheme is proposed to calculate all the terms in the multi-phase Navier-Stokes equations in an integral form, We also design a novel mass updating strategy for enhancing phase mass conservation and reducing particle volume variations under high density ratio settings in multi-fluid simulations. As a result, we achieve significantly stabler simulations in mixture-model multi-fluid simulations involving mixing and unmixing of high density ratio phases. Various experiments and comparisons demonstrate the effectiveness of our approach.
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