航行体通气空泡发射方式对出水过程的影响

Effect of Ventilation Cavitation Launching on Water-Exit for Submarine Vehicle

潜射航行体自然空化情况下,穿越水/气界面时会受到空泡溃灭的冲击载荷,对空泡进行主动通气是一种有效的降载方法,文章针对通气空泡的物理过程建立了一套完整的数值算法,采用标准k-ε两方程湍流模型,VOF多相流模型,Zwart-Gerber-Belamri空化模型,结合UDF自定义函数与动网格动态层技术,开展了通气空泡整个出水过程的数值模拟工作,研究了通气量通气时序通气方式等方面对空泡形态出水载荷等方面的影响,获得了对工程设计有参考价值的基本结论.

Submarine vehicle will take on the load due to cavity collapse during water-exit,on condition that cavity occurs.Ventilation is an effective method to decline water-exit load. As for ventilation,a set of methods was developed,which included normal k-ε turbulent equations,VOF multi-phase model,Zwart-Gerber-Belamri cavitation model,dynamic mesh and UDF function. The process of water-exit with ventilation was simulated. The effects of ventilation volume,sequence,and method on cavity configuration and water-exit load were studied. Some basic conclusions were drawn.