结构在无限流体域中振动时附连水质量的数值计算方法

通过对结构与理想流体耦合问题的分析，利用有限元法对流固耦合问题的附连水质量解耦的方法进行了研究。对一些规则的结构进行了计算，同时与解析解及Ｍｏｒｓｉｏｎ公式进行比较，在对计算结果分析的基础上，提出了有限元法计算附连水质量时流体范围的划取方法，使实际工程计算能够有所依据地选定所要计算的流体范围，从而节省了计算工作量。

Numerical Computing Method of Additional Water Mass when the Structure Vibrates in the Infinite Liquid

Through analysis of the coupling problem between structure and ideal liquid,some researches were done on the method of uncoupling to the additional water mass of the solid- liquid coupling problem using FEM.This paper calculated some regular structures and compared the results with the analytic solu- tion and Morison formula.Based on the calculation,a method was given to choose the liquid scope when computing the additional water mass using FEM,by which one can easily choose the liquid scope when do- ing practical engineering calculation.So,it can reduce the amount of calculation and give some references to the practical engineering calculation.