Numerical simulation of cavitation caused by underwater explosion
Numerical simulation of cavitation caused by underwater explosion
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发表时间：
2014
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通讯作者：
Zong Zh
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作者：
Zong Zh
空泡可以发生在自由表面附近的水域和受到水下冲击的结构物。当空化区域塌陷时，产生高的再加载压力。本文从理论上分析了空化区的形成。利用ABAQUS软件对空化区的演化和闭合过程进行了数值模拟，并与实验值进行了比较。结果表明，ABAQUS能很好地模拟空化现象，并证明了空化闭合点附近流体中产生的二次压力是不可忽略的。
Cavitation can occur in water area near the free surface and structure subjected to underwater shock. A high reloading pressure is generated when the cavitation region collapses. In this paper, the formation of cavitation region is analyzed in theory. The evolution and closure of cavitation region are numerically simulated by ABAQUS and compared with experimental values. The results show that cavitation can be simulated very well by ABAQUS and the secondary pressure produced in the fluid near the cavitation closure point is proved to be non-ignorable.