摘要
针对任意多面体网格的三维流体体积方法(VOF)提出了一种界面重构算法。算法引入了一种新的多面体数据结构,在此基础上提出了一种针对任意凸多面体的切割算法。本文利用牛顿迭代法同时结合多面体几何特性,实现了任意三维网格中的VOF界面重构。数值计算实验表明,算法能适用于不同类型的多面体,并具有较高的收敛效率。最终算法在非结构化网格中成功实现了球形界面的VOF界面重构。
This paper presents a VOF-based interface reconstruction method for 3D unstructured grid.A new data structure for all kinds of convex polyhedrons was designed,and a body cutting algorithm was developed.On the basis of geometrical characteristics of polyhedrons,Newton iterative method,a root-finding method,was employed to solve the reconstructed polygons inside them.Numerical tests suggest that the proposed algorithm supports various types of polyhedrons with excellent efficiency.Finally,VOF-based interface reconstruction under unstructured grid was successfully conducted by the proposed method.
作者
范山
王弈然
凌空
朱虎
Fan Shan;Wang Yiran;Ling Kong;Zhu Hu(School of Aerospace,Xi’an Jiaotong University,Xi’an,710049,China;School of Electronic and Information Engineering,Xi’an Jiaotong University,Xi’an,710049,China;Key Laboratory of Thermo-Fluid Science and Engineering of MOE,Xi’an Jiaotong University,Xi’an,710049,China;Xi’an Shu Feng Technological Information Co.Ltd.,Xi’an,710054,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2019年第S02期6-10,共5页
Nuclear Power Engineering
基金
中国博士后科学基金(No 2018M633506)
