粘性流体大幅晃动的ALE迎风有限元方法  

ALE Upwind Finite Element Methods for Viscous Flow with Large-Amplitude Sloshing

作　　者：岳宝增[1] 彭武[1] 

机构地区：[1]北京理工大学理学院,北京100081

出　　处：《北京理工大学学报》2005年第3期279-282,共4页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(10272022)

摘　　要：将任意的拉格朗日-欧拉(arbitraryLagrange-Euler,ALE)描述引入到速度修正格式中,利用迎风有限元法推导了数值离散方程,给出了ALE描述下的分步有限元计算格式,通过对不可压粘性流体大幅晃动问题进行数值模拟,证实了本文方法的有效性和可靠性.The kinematics of the arbitrary Lagrangian-Eulerian(ALE) description is introduced and the fluid dynamics equations are revised in the ALE form. The numerical discrete equations of fractional steps finite element method are developed by streamline-upwind/Petrov-Galerkin formulation. In order to confirm the effectiveness of the method, large-amplitude liquid sloshing in a tank is simulated. The results are compared with those of previously proposed methods and available experimental results. Good agreement is obtained.

关 键 词：自由液面 迎风格式 ALE分步有限元方法 大幅晃动 

分 类 号：O351.2[理学—流体力学]