flow

Based on fluid transient theory and flow network theory, the mathematical models of the system consisting of reciprocating pump, piping and nozzle device of the self-excited oscillation pulsed jet are put forward, then the effects of upstream oscillating flow on oscillating characteristics of the jet are analyzed.

基于瞬交流和流体网络理论建立了由往复柱塞泵、管路和自激振荡喷嘴组成的装置系统的数学模型，分析了泵源脉动对自激振荡脉冲射流振荡特性的影响，表明当来流脉动频率小于或等于喷嘴装置的固有频率时，能提高射流的振荡、冲蚀效果，理论分析与实验结果吻合。