围压下自激吸气脉冲射流装置压力特性试验  

Experimental Study on Impact Pressure Characteristics of Self-Excitation Inspiration Pulsed Jet Nozzle in Confining Pressure

作　　者：解克宇 高传昌[1] 刘新阳[1] 马文良[1] 胡亚洲[1] 王猛飞[1] 

机构地区：[1]华北水利水电大学电力学院,河南郑州450045

出　　处：《人民黄河》2016年第5期27-30,124,共5页Yellow River

基　　金：国家自然科学基金资助项目(51309099);华北水利水电大学研究生创新课题(YK2014-14);华北水利水电大学2014年大学生创新计划项目(HSCX2014118);水利部公益性行业科研专项(201201085)

摘　　要：为了解自激吸气式脉冲射流装置在围压作用下的脉冲效果及腔体内压力的变化规律,利用自主研发的水下射流装置平台开展试验研究,分析了不同围压时装置在不吸气和吸气条件下的冲击力、频率特性及腔体内压力的变化规律。结果表明:围压对装置射流冲击力衰减影响较大,相同靶距时高围压的冲击力衰减较快;装置吸气后射流冲击力的频率比不吸气低,但振幅变大;围压对不吸气和吸气条件下腔体内的压力影响规律相同,测点压力均随着围压增大而减小,而在同一围压条件下吸气后腔体内测点压力变大。In order to insight into the pulse effect and the pressure variation law in chamber of the self-excitation inspiration pulsed jet inconfining pressure,self-excitation inspiration pulsed jet nozzle was used by experiment and the variation law of impact force, pressure inchamber, frequency characteristic in non-inspiration and inspiration were analyzed. The results show that the confining pressure has a greateffect on impact force attenuation and it is a greater impact in high confining pressure. The self-excitation inspiration pulsed jet＇ frequency ininspiration is less in non-inspiration,but higher in amplitude. The confining pressure has the same effect on inspiration and non-inspiration.As for the same conditions, the pressure of typical measurement point is decreased as confining pressure increases, but the condition ofinspiration is higher than that of non-inspiration at the same confining pressure.

关 键 词：围压 吸气 脉冲射流 冲击力 频率 试验 

分 类 号：TP69[自动化与计算机技术—控制理论与控制工程]