小型气液射流泵内部流场数值模拟及优化选择  

Numerical simulation of internal flow and optimization for small-scale gas-liquid jet pump

作　　者：朱荣生[1] 燕浩[1] 李继忠[1] 苏保稳[1] 胡自强[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《排灌机械工程学报》2010年第3期207-210,共4页Journal of Drainage and Irrigation Machinery Engineering

基　　金：江苏省重大科技攻关项目(SE2006084)

摘　　要：为深入研究采用空气作为工作流体的气液射流泵性能和特征,设计了不同结构的气液射流泵试验模型.应用VOF方法,结合k-ε湍流模型,根据试验所得数据确定边界条件,对相同工作气体压力和不同参数下的气液射流泵内部流动进行了数值模拟.模拟结果表明,带有扩张式喷嘴的气液射流泵流体的速度和静压分布情况比非扩张式喷嘴的气液射流泵的好;喉嘴距为5mm气液射流泵的速度分布情况较佳;混合室直径为6 mm的气液射流泵的速度分布情况较好.带有扩张式喷嘴喉嘴距为5 mm及混合室直径为6 mm的气液射流泵有较好的速度分布.In order to study the performance and characteristics of the internal flow field of gas-liquid jet pumps with air as working fluid,the gas-liquid jet pump test models with different structures were designed.Boundary conditions were determined according to the data obtained from test.The gas-liquid jet pump was numerically simulated in the same working-gas pressure and different parameters by k-ε turbulence model and VOF method.The simulation results show that the gas-liquid jet pumps with expansion nozzles has good velocity and static pressure distributions,the air-liquid jet pumps with 5 mm distance from throat to mouth and that with 6 mm diameter of mixed chamber have good velocity distributions.The gas-liquid jet pumps,nozzle with the expansion,mixed chamber with 5 mm from throat to mouth and 6 mm diameter have better velocity distributions.

关 键 词：气液射流泵 内部流场 数值模拟 喷嘴 混合室直径 喉嘴距 

分 类 号：S277.9[农业科学—农业水土工程] TH48[农业科学—农业工程]