A coupled volume-of-fluid and level set (VOSET) method based on remapping algorithm for unstructured triangular grids
A coupled volume-of-fluid and level set (VOSET) method based on remapping algorithm for unstructured triangular grids
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DOI：
10.1016/j.ijheatmasstransfer.2017.03.096
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发表时间：
2017-08
影响因子：
5.2
通讯作者：
Zhizhu Cao;Dongliang Sun;Bo Yu;Jinjia Wei
中科院分区：
文献类型：
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作者：
Zhizhu Cao;Dongliang Sun;Bo Yu;Jinjia Wei
本文提出了一种在非结构三角形网格上模拟界面流动的VOSET方法。该方法采用拉格朗日-欧拉重映射算法进行体积分数平流，通过简单的迭代几何运算计算水平集函数。VOSET方法既能满足质量守恒又能准确地预测表面张力，综合了VOF和LS方法的优点，克服了它们的不足。最后用Zalesak的缝盘旋转、单涡流动、溃坝和单气泡上升问题对本文方法进行了验证。计算结果表明，该方法能够在非结构三角形网格上精确模拟不可压两相流。
We propose a coupled volume-of-fluid and level set (VOSET) method for interfacial flow simulations on unstructured triangular grids. In this method, the volume fraction advection is performed using a Lagrangian–Eulerian remapping algorithm, and the level set function is calculated by a simple iterative geometric operation. The present VOSET method can not only satisfy mass conservation but also predict the surface tension with good accuracy, thus combining the advantages and overcoming the disadvantages of volume-of-fluid (VOF) and level set (LS) methods. Finally, the present method is verified by well known Zalesak's slotted-disk revolution, single vortex flow, dam break and single bubble rising problems. The results illustrate that the present method can accurately simulate incompressible two-phase flows for unstructured triangular grids.