通过Fluent中的6DOF动网格技术和RNG湍流模型对超空泡六尾翼枪弹尾部枪弹不同楔角进行数值仿真。仿真表明空泡气流稳定前楔角为60°的六尾翼枪弹的弹道特征及速度波动大于楔角为30°和楔角为45°的六尾翼枪弹，空泡气流稳定后楔角为60°的六尾翼枪弹的弹道特征及速度波动小于楔角为30°和楔角为45°的六尾翼枪弹。六尾翼超空泡枪弹发生失稳的主要原因是尾翼受到强烈的水蒸气和空气组成的空泡气流的干扰，六尾翼枪弹的尾翼受力不均，导致枪弹向非击发方向偏转，使得六尾翼枪弹失衡。
6DOF dynamic mesh technology in Fluent software and RNG turbulence model were used to simulate different wedge angles in the tail of a supercavitating six-tailed projectile. The simulation results show that the ballistic characteristics and velocity fluctuation of the six-tailed projectile with the wedge angle of 60° before the cavitation airflow stabilization are greater than those of the six-tailed projectile with the wedge angle of 30° and 45°, and those of the six-tailed projectile with the wedge angle of 60° after the cavitation airflow stabilization are Less than those of the six-tailed projectile with the wedge angle of 30° and 45°.The main reason for the instability of the six-tail supercavitation projectile is that the tail is disturbed by the strong water vapor and the cavitation airflow composed of air. The uneven force on the tail of the six-tail projectile leads to the deflection of the projectile to the nll-firing direction, which makes the six-tail projectile unbalanced.
2022,44(5): 11-15 收稿日期：2021-06-01
DOI：10.3404/j.issn.1672-7649.2022.05.003
分类号：TJ011.+3
基金项目：国家自然科学基金青年项目（51904069）；河北省自然科学基金资助项目（E2019501085）；东北大学秦皇岛分校科研启动资金项目（XNY201808）
作者简介：郝博(1963-)，男，博士，教授，研究方向为超空泡武器技术
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