摘要
推导了一种基于ALE描述弱可压缩液体与结构非线性耦合求解的分步有限元数值计算法,速度与压力使用同阶线性插值,并对耦合系统的竖动响应进行了分析。通过二维黏性流体大晃动问题实例计算,验证了该法简便、可行有效。
This paper establishes coupled finite element equations of coupling system solved by iteration method. Thus, a new ALE fractional steps finite element method which could solve nonlinear slightly compressible fluid-solid coupling system is presented. This method is useful because one can use the same linear interaction functions for both velocity and pressure. To confirm the effectiveness of the method, large-amplitude two-dimensional viscous fluid sloshing in a tank is simulated and good agreement is obtained in comparison with available results. Then, the method is applied to the study of dynamic response of slightly compressible fluid-tank coupling system under vertical excitation.
出处
《水电能源科学》
北大核心
2009年第3期84-86,149,共4页
Water Resources and Power
基金
国家自然科学基金资助项目(507669001)
关键词
弱可压缩流体
流固耦合系统
非线性晃动
ALE分步有限单元法
slightly compressible fluid
fluid-structure coupling system
nonlinear sloshing
ALE fractional steps finite element method
作者简介
魏述和（1979-），男，博士研究生，研究方向为水工结构动力响应分析，E-mail：weishuhe2003@yahoo.com．cn
通讯作者：张燎军（1962-），男，教授、博导，研究方向为水工结构工程、岩土工程与防灾减灾等，E-mail：njzlj@vipsina．com
