诱导轮空化及低温热抑制效应机理分析

Analysis of Cavitation and Heat Suppression Mechanisms for Cryogenic Fluid in Inducer

以高速泵试验数据和数值仿真结果为基础,结合流体的物理特征和诱导轮运行特点,分析了诱导轮局部静压力迅速下降和温度差产生的原因,剖析了诱导轮空化机理;在相同运行参数下,对比诱导轮在低温液氧和常温水介质中空化的发生情况,定性和定量地分析了低温介质对空化的抑制效应。

Based on the data resulted from the test of high speed pump and numerical simulation, and combined with the physical characteristics of fluids and the operating features of inducer, in this article, the causes resulting in fast decrease of local static pressure and temperature differential in inducer and its cavitation mechanism were analyzed. With the same parameters in operation, the situations of cavitation occurred in cryogenic liquid oxygen and room temperature water were compared, and then the suppression effect of cryogenic medium to cavitation was qualitatively and quantitatively analyzed.