Unstructured Grid Based Volume-of-Fluid Method

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Unstructured Grid Based Volume-of-Fluid Method

更新时间：2025-07-09

- Unstructured Grid Based Volume-of-Fluid Method
- Vol. 44, Issue 9, Pages: 99-103(2010)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： O351.2
- Online First：10 September 2010，
  
  Published：2010
- 稿件说明：
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Unstructured Grid Based Volume-of-Fluid Method[J]. 2010, 44(9): 99-103.
DOI：

Unstructured Grid Based Volume-of-Fluid Method[J]. 2010, 44(9): 99-103. DOI：

摘要

基于三角形非结构化网格

发展了一种类似于结构化网格简单直线界面计算方法的界面重构方案.该方法为纯欧拉方法

根据位于两相界面网格的相邻网格流体信息在该网格内部构造平行于某边的界面线

通过界面线与网格边界围成的几何形状计算流体输运

采用修正系数保证全局的质量守恒.对均匀平直速度场中的同心双运动界面、旋转速度场中的马蹄形界面和剪切流场中的圆形运动界面模型等3个经典算例

使用速度反向还原法检测了所提方法

7 600个非结构化网格上的界面构造效果达到了6 400个结构化网格的精度.

Abstract

A simple line interface calculation-volume of fluid(SLIC-VOF)interface reconstruction technology was developed on the basis of the triangular unstructured grid. For a cell containing the interface

a straight line segment parallel with one side of the triangle cell was set on the interface according to the volume fractions in the three neighbor cells. The volume flux of the fluid with the assigned phase was determined by the geometry relation between the interface line and the volume flux on each side. Three tests were performed to verify the feasibility of the present unstructured SLIC-VOF interface reconstruction method

including an advection test of a right-angled triangle

the Zalesak slotted disk rotation test

and a single-vortex shearing flow test. The results show that the accuracy of the present method for the unstructured grid with 7 600 cells is comparative with that of the conventional SLIC-VOF method for the structured grid with 6 400 cells after the interface restoration in the reversed velocity field.

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references

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