淹没条件下自激吸气式脉冲射流流场初步研究  

Preliminary Study of Self-Excited Inspiration Pulse Jet Flow Field Under Submerged Condition

作　　者：文泓森[1] 高传昌[1] 赵礼[1] 

机构地区：[1]华北水利水电学院,河南郑州450011

出　　处：《人民黄河》2013年第4期109-110,114,共3页Yellow River

基　　金：水利部公益性行业科研专项(201201085)

摘　　要：运用计算流体动力学软件,对水下自激吸气式脉冲射流流场进行数值计算。结果表明:在模拟工况的运行参数和结构参数下,自激吸气式脉冲射流装置可以产生自吸气;不同水深条件下,装置形成的涡旋气团时间不同、气团形状不同;随着模拟水深的加大,装置内气体浓度以及射流轴心的速度、压力呈现递减趋势。The self-excited inspiration pulse jet flow field under submerged condition was numerically calculated by computational fluid dynamics software. The results show that .. the self-excited inspiration pulse jet device can aspirate by itself under the simulation condition of certain operating parameters and structure parameters ; the time which reflects that the device formed vortex air masses and the shapes of the air masses are different under different water depths ; with the increasing of simulation water depth, the gas concentration, the speed of jet axis and the pressure in the de- vice show a decreasing trend.

关 键 词：自激吸气 数值模拟 流场分析 脉冲射流 

分 类 号：TV136[水利工程—水力学及河流动力学]