通过水洞实验对回注射流现象及其对通气超空泡形态的影响进行了研究。实验水洞为封闭的连续通气水洞。通过高速摄像机记录回注射流及通气超空泡的动态变化过程。摄像机的拍摄速率为每秒1000帧。文中在实验的基础上分析了超空泡形态变化趋势与回注射流之间的关系并讨论了回注射流的形成机理。此外,还分析了通气系数对回注射流的影响。
The phenomena of re-entrant jet and its effect on the shape of ventilated supercavity were investigated through water tunnel experiment.The water tunnel is a closed continuously ventilated one.The re-entrant jet and dynamic procedure of ventilated supercavity were recorded by a high speed camera at a rate of 1 000 frames per second.The variation trend of supercavity with re-entrant jet is analyzed and the formation mechanism of re-entrant jet is discussed.Furthermore,the effect of ventilated coefficient on the behavior of re-entrant jet is also studied.