回转体倾斜入水空泡及弹道特性实验

发布时间：2018-03-29 20:11

本文选题：回转体　切入点：运动参数　出处：《北京航空航天大学学报》2016年11期

【摘要】：针对回转体低速倾斜入水过程空泡的生成机理和演化特性开展研究。通过不同入水速度和入水角度回转体倾斜入水对比实验,研究了入水速度和入水角度对入水空泡、回转体速度、俯仰角及阻力系数的影响规律。研究结果表明:空泡深闭合时刻的空泡长度、最大空泡直径和空泡闭合点深度随着回转体入水速度的增加而增大;空泡深闭合发生时间随着入水速度的增加而小幅增大;同一入水时刻回转体俯仰角和俯仰角速度均随入水速度的增加而减小;随着回转体入水角度的增加,同一时刻入水空泡直径和回转体速度逐渐减小,阻力系数逐渐增大。
[Abstract]:The formation mechanism and evolution characteristics of cavitation in the low speed tilting process of rotary body are studied. Through the contrast experiments of different inlet velocities and different angles of inlet water, the effect of inlet velocity and angle on the cavitation in water is studied. The results show that the length of cavitation, the maximum diameter of cavitation and the depth of closing point of cavitation increase with the increase of the velocity of water entry. The time of deep cavitation closure increases slightly with the increase of water entry velocity, the pitch angle and pitch velocity decrease with the increase of water entry velocity at the same water entry time, and with the increase of water entry angle of rotary body, the velocity of pitch angle and pitch angle decrease with the increase of water entry velocity. At the same time, the diameter of the cavitation and the velocity of the rotary body gradually decrease, and the resistance coefficient increases gradually.
【作者单位】：哈尔滨工业大学航天学院;
【基金】：黑龙江省自然科学基金(A201409) 中央高校基本科研业务费专项资金(HIT.NSRIF.201159) 哈尔滨市科技创新人才研究专项资金(2013RFLXJ007)~~
【分类号】：O35;TJ6

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