液环泵喷射器性能的数值模拟研究及实验验证  

Numerical simulation of performance of ejector of liquid ring vacuum pump and its testing verification

作　　者：黄思[1] 阮志勇[1] 杨国蟒[1] 吴泰忠 谭紫华 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640 [2]广东省佛山水泵厂有限公司,广东佛山528000

出　　处：《真空》2009年第6期17-19,共3页Vacuum

摘　　要：本文应用CFX软件及k-ε湍流模型,实现了液环真空泵喷射器三维流动传热的数值模拟。并分析喷射器内流场的压力分布、马赫数分布和温度分布,了解其内部的复杂流动,利用仿真结果计算出液环真空泵喷射器在不同压力下引射气体流量的变化,并与实验曲线进行对比验证,为优化喷射器结构,实现喷射器与液环真空泵的最佳匹配提供依据。A 3-D numerical simulation of the fluid heat transfer of jet flow from the ejector of a liquid ring vacuum pump was performed with a commercial software package CFX and k-ε turbulence model. According to the simulation results, the distributions of pressure, Mach number and temperature in the flow field within the ejector were analyzed to reveal the complex gas flow in the ejector. Then, the change in gas flowrate driven under different pressures within the ejector was calculated and verified in contrast with tested curves, thus providing a reference for optimizing the construction of ejector and implementing the optimal matching of ejector and liquid ring vacuum pump.

关 键 词：喷射器 三维流场 数值模拟 CFX 

分 类 号：TQ051.4[化学工程] TB752.3[一般工业技术—真空技术]