超空泡水下航行器尾喷温度对空泡形态的影响

Influence of Tail Jet Temperature of Supercavitating Underwater Vehicle on Cavitation Configuration

为了满足超空泡水下航行体稳定航行的流体动力条件,在航行体上闭合的空泡必须具有特定的形态,形成必要的流体动力布局,来平衡航行体自身的重力以及所受的力矩。该文采用计算流体动力(CFD)方法对2D模型通气超空泡及尾部喷流进行一体化数值仿真研究。在模型处于零攻角时,对不同尾喷温度下的通气超空化流场进行数值分析,得出了超空泡形态随尾部喷流温度的变化规律,与试验所得规律一致,为超空泡航行体的流体动力特性与动力布局研究提供了参考。

In order to meet the hydrodynamic conditions for supercaviating underwater vehicles moving stable, the cavity closing on a vehicle must have a particular configuration to balance the vehicle＇s gravity and the moment suffered. In this study, the influence of tail jet intensity on the steady supercavitating flow was analyzed, and a numerical simulation of ventilated cavitation and tail jet flow field of a 2D underwater vehicle model was performed by using calculation fluid dynamics （ CFD ）. Supercavitating flow was analyzed at different tail jet temperature when the attack angle of the vehicle model was zero degree. The law of influence of tail jet temperature on supercavition was achieved, which agree with experimental result.