摘要
基于计算流体动力学,对不同的液气射流泵喉嘴腔收缩半角进行了三维数值计算,根据数值计算结果,分析了喉嘴腔收缩半角对液气射流泵内部流场情况的影响,以及对液气射流泵吸气效率的影响关系。研究结果表明:随着喉管收缩半角的增大,流量比先略有升高然后略微减小随后保持不变,压力比先急剧增大,达到峰值后缓慢减小,存在最大值;射流泵的效率随收缩半角的变化趋势与压力比的变化趋势相似,存在最大值。根据最大吸气效率减小5%来确定最优吸气效率区间,相应的喉管收缩半角的最优范围为13.5°~17.1°。
The flow field in a liquid-gas jet pump was mathematically modeled,theoretically analyzed in fluid dynamics,numerically simulated with FLUENT software and experimentally evaluated for design optimization.The influence of the shrinkage half-angle of nozzle throat on the flow-rate ratio,pressure ratio,and gas pumping efficiency was investigated.The distributions of pressure and velocity were calculated.The simulated results show that the shrinkage half-angle has a major impact.For example,as the half-angle increases,the flow-rate ratio changes in a fluctuation-constant mode,the pressure ratio varies in a rapid-increase-slow-decrease manner,peaking at 15 o,and the gas pumping efficiency changes in a rapid-increase-fluctuating-decrease way.The optimized half-angle should be in 7.1°~13.5°range at which the gas-pumping efficiency is estimated to be below 5%of the peak efficiency of liquid-gas jet pump.
作者
高贵军
邢亚东
王迎樑
Gao Guijun;Xing Yadong;Wang Yingliang(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Province Mineral Fluid Controlling Engineering Technology Research Center,Taiyuan 030024,China;National-local Joint Engineering Laboratory of Mining Fluid Control,Taiyuan 030024,China)
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2020年第2期174-179,共6页
Chinese Journal of Vacuum Science and Technology
基金
国家科技支撑计划项目(2013BAK06B00)
山西省科技成果转化引导专项(2016004D131027).
作者简介
联系人:高贵军,Tel:13803432565,E-mail:gaogj161@163.com
