Modified Numerical Model for Simulating Fluid-Filled Structure Response to Underwater Explosion with Cavitation

作     者：肖巍 张阿漫 汪玉 

作者机构：College of Shipbuilding Engineering Harbin Engineering University Unit 92857 of PLA 

出 版 物：《Journal of Shanghai Jiaotong university(Science)》 (上海交通大学学报（英文版）)

年 卷 期：2014年第19卷第3期

页      面：346-353页

核心收录：

学科分类：08[工学] 0824[工学-船舶与海洋工程] 082401[工学-船舶与海洋结构物设计制造] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the National Security Major Basic Research Program of China(No.613157) the Outstanding Youth Fund of China(No.51222904) the National Natural Science Foundation of China(No.51279038) 

主　　题：spectral element finite element doubly asymptotic approximation(DAA) fluid structure interaction fluid filled structure 

摘      要：In this paper, a numerical method is established to analyze the response of fluid-filled structure to underwater explosion with cavitation and the validation of the method is illustrated. In the present implementation, the second-order doubly asymptotic approximation(DAA2) other than curved wave approximation(CWA)is used to simulate non-reflecting boundary. Based on the method, the difference between DAA2non-reflecting boundary and CWA non-reflecting boundary is investigated; then, the influence of internal fluid volume and the influence of cavitation on dynamic response of spherical shell are analyzed. Compared with CWA non-reflecting boundary, DAA2non-reflecting boundary treats added mass effects better. When the internal fluid is full, the displacement and velocity of spherical shell decrease, but, when the internal fluid is half, the displacement and velocity of spherical shell increase. The effect of cavitation is more obvious at the trailing point than at the leading point of spherical shell.