水中结构物附近三维爆炸气泡的数值模拟  

Numerical simulation of a three-dimensional underwater explosion bubble near a structure

作　　者：宗智[1] 何亮[1] 张恩国 

机构地区：[1]大连理工大学船舶工程学院,大连116024 [2]大连船舶重工集团有限公司,大连116023

出　　处：《水动力学研究与进展（A辑）》2007年第5期592-602,共11页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金资助项目(50579004)

摘　　要：该文阐述水下爆炸结构物附近三维非对称气泡运动的计算模型,基于势流理论采用边界积分法求解拉普拉斯方程。通过与参考文献实验的比较,验证了计算模型的正确性。最后以椭球形结构物下方爆炸气泡为算例进行详细的数值模拟和分析,获得气泡运动规律、流场压强变化,结构物危险载荷及其分布情况,旨在为工程领域水下爆炸气泡运动规律探索以及结构物的破坏机理研究提供参考。The three-dimensional model of an underwater explosion bubble near a structure is described here. The bound-ary integral method is used to solve Laplace equation based on potential-flow theory. Comparisons have been carried out between the results of present model and experiments, which demonstrate the accuracy of our method. Finally, An explosion bubble under an ellipsoid structure is studied numerically in detail, from which we obtain the process of bubble motion, fluid pressure development and the critical loading on the structure. They can be as important references in the engineering field of underwater explosion bubble dvnamic and destruction mechanism of the structure.

关 键 词：气泡运动 水下爆炸 边界积分方法 结构物载荷 射流 

分 类 号：O35[理学—流体力学]