水下航行器通气超空泡生成与维持实验研究

超高速水下航行器通气系统工作时需采用多级通气流量.为获得通气流量的设计依据,在西北工业大学高速水洞进行了超空泡生成和维持、通气流量突变对空泡形态影响的系列实验研究.实验结果表明:生成超空泡的通气流量与维持相应空泡形态的通气流量相差很大,就本次研究所选的模型而言,前者是后者的2.616倍左右；通气超空泡生成速度与航行器速...

Experimental Study of Ventilation Supercavitation Generation and Maintenance Produced by Underwater Vehicle

After launching of a superspeed underwater vehicle, multilevel ventilation system is adopted. In order to obtain the design criterion of ventilation rate, a series of experiments about the supercavitation generation and maintenance and the effect of ventilation rate on of supercavity under different conditions were carried out based on high-speed water tunnel (HSWT) in North West Polytechnic University (NWPU). Experimental results show that distinction of critical ventilation rate between the generating supercavity and the maintaining corresponding supercavity is very obvious: the former is 2.616 times of the latter, according to the results mentioned in this paper. Supercavity generation speed is much slower than vehicle's speed, and increases with the increase of ventilation rate. After ventilation supercavity formed, ventilation mutation distinctly influences the cavity form, the way of gas-leakage and the stability of cavity. The results presented in this paper may contribute evidences to further study of free-flying superspeed vehicle.