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基于ALE有限元法的储液罐耦合竖动响应研究
Study on Dynamic Response of Tank Coupling System under Vertical Excitation by ALE Finite Element Method
【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。
【Abstract】 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.
【Key words】 slightly compressible fluid; fluid-structure coupling system; nonlinear sloshing; ALE fractional steps finite element method;
- 【文献出处】 水电能源科学 ,Water Resources and Power , 编辑部邮箱 ,2009年03期
- 【分类号】TV312
- 【被引频次】2
- 【下载频次】162