A density-scaled continuum surface force model within a balanced force formulation
A density-scaled continuum surface force model within a balanced force formulation
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DOI：
10.1016/j.jcp.2014.08.034
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发表时间：
2014-12
期刊：
影响因子：
--
通讯作者：
K. Yokoi
中科院分区：
文献类型：
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作者：
K. Yokoi
我们提出了一个数值框架，它可以模拟具有复杂运动界面的自由面流动，如液滴飞溅，从而最小化杂散电流。数值框架基于CLSVOF(耦合水平集和流体体积)方法，THINC/WLIC(界面捕捉/加权线界面计算的双曲线正切)格式，多矩方法(CIP-CSL和VSIAM3)和密度尺度连续面力(CSF)模型。在本文中，我们提出了一种基于水平集的密度尺度平衡CSF模型的算法，并证明了在不给出精确曲率的情况下，密度尺度平衡CSF模型比标准平衡CSF模型在不使用密度缩放的情况下更能减少杂散电流。我们还表明，数值框架可以很好地捕捉到液滴飞溅的物理过程。
We propose a numerical framework which can simulate free surface flows with complex moving interfaces like droplet splashing as minimizing spurious currents. The numerical framework is based on the CLSVOF (coupled level set and volume-of-fluid) method, the THINC/WLIC (tangent of hyperbola for interface capturing/weighted line interface calculation) scheme, multi-moment methods (CIP-CSL and VSIAM3) and density-scaled CSF (continuum surface force) model within a balanced force formulation. In this paper, we propose a level set based algorithm of the density-scaled balanced CSF model and show that the density-scaled balanced CSF model can reduce spurious currents more than the standard balanced CSF model without using the density-scaling when the exact curvature is not given. We also show that the numerical framework can well capture the physics of droplet splashing.