水下航行体通气超空泡形态及阻力特性试验研究  

EXPERIMENTAL RESEARCH ON SHAPE AND DRAG CHARACTERISTICS OF VENTILATED SUPERCAVITY ON UNDERWATER BODIES

作　　者：蒋增辉[1] 于开平[1] 张嘉钟[1] 王聪[1] 黄文虎[1] 

机构地区：[1]哈尔滨工业大学航天学院,哈尔滨150001

出　　处：《工程力学》2007年第4期152-158,共7页Engineering Mechanics

摘　　要：利用中速空泡水洞开展了通气超空泡试验,并利用已有的经验公式得到了通气空化数,对通气超空泡形态及阻力特性进行了研究。研究表明,通气超空泡的长度和长细比都随通气空化数的增大而减小,航行体阻力系数则随长细比增大而减小。在流速恒定情况下,随通气率的增大,通气空化数逐渐减小,呈指数规律衰减。通气空化数越小,超空泡航行体的减阻效果越好,速度越大,超空泡减阻效果越明显。随通气空化数的减小,超空泡航行体尾部沾湿区域阻力系数也逐渐减小。In a moderate-velocity cavitation tunnel, a series of experiments were conducted to investigate the shape and drag characteristics of ventilated supercavity. The ventilated cavitation number was determined by cooperating experimental results with empirical formulas. The investigation shows that the length and aspect ratio of ventilated supercavity decreased when ventilated cavitation number increased, and the drag coefficient of vehicle decreased when the aspect ratio increased. The ventilated cavitation number decreased with the ventilation flow rate by exponential law at constant velocity. More drag reduction could be achieved at smaller ventilated cavitation number and higher speed. The drag coefficient of the aft wetted area of vehicle also decreased with the ventilated cavitation number.

关 键 词：流体力学 通气超空泡 水洞试验 通气空化数 水下航行体 

分 类 号：O35[理学—流体力学] TV131.3[理学—力学]