诱导轮液氧空化热力学效应数值计算研究  

Numerical Study on Thermodynamic Effect of the Inducer Cavitation in Liquid Oxygen

作　　者：黄彪[1] 樊亚丁 梁文栋 吴钦[1] 王国玉[1] HUANG Biao;FAN Yading;LIANG Wendong;WU Qin;WANG Guoyu(School of Mechnical Engineering, Beijing Institute of Technology, Beijing 100081, China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《北京理工大学学报》2021年第1期53-58,共6页Transactions of Beijing Institute of Technology

基　　金：国家重大基础研究项目(No.613321).

摘　　要：为了研究低温介质诱导轮空化热力学效应,采用FBM湍流模型和基于热力学修正的Kubota空化模型,针对常温水和液氧两种介质的诱导轮空化性能进行了数值计算研究.对比数值预测的常温水介质诱导轮扬程性能与实验结果,验证了数值方法的准确性.计算结果表明,相对于常温水,液氧诱导轮的空化受到了抑制.在液氧空化区域液相和汽相发生了强烈的热量交换,使得局部温度下降,进而导致当地饱和蒸气压下降,抑制了空化的发展.针对不同温度下的液氧,提出了一种诱导轮低温空化特性理论预测方法,基于两种温度下诱导轮空化特性曲线预测其他温度的空化特性.理论预测与数值计算结果吻合较好,验证了该理论预测方法的准确性.To investigate thermodynamic effect of inducer with cryogenic fluids,FBM turbulence model and a revised Kubota cavitation model with thermodynamic correction were applied into the numerical investigation of inducer cavitation in normal temperature water and liquid oxygen.The numerical method was verified by general agreement between the numerical results and experimental data of suction performance of inducer in normal temperature water.The results show that,compared with normal temperature water,the inducer cavitation with liquid oxygen is supressed.There is intense heat transfer for evaporation in cavitation area with liquid oxygen which decreases the local temperature,causing depression of saturation pressure,and hence the development of cavitation is suppressed.For the different temperature of liquid oxygen,a method was proposed to theoretically predict the suction performance of cavitating inducer.Two cavitation performance curves were established as a reference to predict other inducer cavitation performance at different temperature of liquid oxygen.The agreement between theoretical prediction results and numerical results has verified the predicting method.

关 键 词：空化 诱导轮 热力学效应 理论预测 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]