水下自激脉冲射流喷嘴的吸气性能试验研究  

Inspiration performance of self-excited pulse jet nozzle in submerged condition

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

机构地区：[1]华北水利水电大学,郑州450045

出　　处：《南水北调与水利科技》2016年第1期109-113,118,共6页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金(51309099);水利部公益性行业科研专项经费项目(201201085);华北水利水电大学大学生创新创业计划项目(HSCX2014115)~~

摘　　要：运用自行研制的试验装置对水下不同结构参数的自激吸气脉冲射流喷嘴的吸气性能进行试验,研究了喷嘴的上下喷嘴直径、腔径和腔长等不同的组合配比对喷嘴吸气量的影响,以及喷嘴吸气量对喷嘴冲击性能的影响。结果表明：喷嘴吸气是提高水下自激脉冲射流冲击性能的有效途径,喷嘴的相对冲击力随着喷嘴吸气量的增加而提高;在较优的喷嘴结构参数配比范围内,喷嘴的吸气比率最大;最佳吸气比率的喷嘴面积比、相对腔长和相对腔径配比范围分别为3.5~4.0、8~9、11~12.5。This study investigate the self-excited inspiration pulse jet nozzle in submerged condition by using the independently developing testing equipment.To analyze the influence of inspiratory capacity on inspiration performance,the structure parameters of nozzle cavity length,lumen diameter,diameter of nozzle and cavity volume to the nozzle under the influence of inspiratory capacity were evaluated.The results indicated that the inspiration is an effective way to improve device performance.The relative impact of the nozzle was enhanced with the increasing of inspiration efficiency;Within the scope of the optimal ratio of nozzle structure parameters,the largest inspiration ratio of nozzle was obtained;The nozzle area ratio,relative cavity length and lumen diameter of optimal inspiration efficiency ranges from 3.5~4.0,8~9and 11~12.5,respectively.

关 键 词：喷嘴 脉冲射流 吸气 结构参数 冲击力 吸气量 

分 类 号：TV136[水利工程—水力学及河流动力学]