Some improvements on free surface simulation by the particle finite element method

被引：9
|
作者：
Tang, B. [1 ]
Li, J. F. [1 ]
Wang, T. S. [1 ]
机构：
[1] Tsinghua Univ, Sch Aerosp, Beijing 100084, Peoples R China
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS | 2009年 / 60卷 / 09期
关键词：
free surface; particle finite element method; adaptive time method; mass correction; pressure oscillations; least-square finite element method; NEIGHBOR GALERKIN METHODS; INCOMPRESSIBLE FLOWS; CALCULUS; DYNAMICS; SET;
D O I：
10.1002/fld.1937
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The Lagrangian method has become increasingly popular in numerical simulation of free surface problems. In this paper, after a brief review of a recent Lagrangian method, namely the particle finite element method, some issues are discussed and some improvements are made. The least-square finite element method is adopted to simplify the solving of the Navier-Stokes equations. An adaptive time method is derived to obtain suitable time steps. A mass correction procedure is imported to improve the mass conservation in long time calculations and time discretization scheme is adopted to decrease the pressure oscillations during the calculations. Finally, the method is used to simulate a series of examples and the results are compared with the commercial FLOW3D code. Copyright (C) 2008 John Wiley & Sons, Ltd.
引用
收藏
页码：1032 / 1054
页数：23
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