高速离心泵叶轮开孔对空化性能的影响研究  

Effect of impeller perforation on cavitation performance of high-speed centrifugal pump

作　　者：王彦伟[1,2,3] 向林 WANG Yanwei;XIANG Lin(School of Mechanical and Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,China;Hubei Provincial Key Laboratory of Chemical Equipment Strengthening and Intrinsic Safety,Wuhan 430205,China;Hubei Green Chemical Equipment Engineering Technology Research Center,Wuhan 430205,China)

机构地区：[1]武汉工程大学机电工程学院,湖北武汉430205 [2]化工装备强化与本质安全湖北省重点实验室,湖北武汉430205 [3]湖北省绿色化工装备工程技术研究中心,湖北武汉430205

出　　处：《陕西理工大学学报（自然科学版）》2024年第6期1-8,共8页Journal of Shaanxi University of Technology:Natural Science Edition

基　　金：国家自然科学基金项目(51373186);湖北省教育厅重点科研项目(D20161506)。

摘　　要：针对目前高速离心泵发生空化现象导致性能降低的情况,基于RNG κ-ε湍流模型和Zwart-Gerber-belamri空化模型,建立了高速离心泵的三维模型,对叶轮前后盖板进行开孔,使用CFX对叶轮穿孔高速离心泵在不同空化数下的流场进行数值计算和模拟。研究结果表明,叶轮开孔可以有效降低流场压力,降低发生空化时气泡的体积分数,缓解发生空化时气泡对流道的堵塞程度,能够有效改善高速离心泵的空化性能。To address the issue of performance degradation in high-speed centrifugal pumps due to cavitation,a three-dimensional model of a high-speed centrifugal pump was established based on the RNGκ-εturbulence model and the Zwart-Gerber-belamri cavitation model.Holes were made in the front and rear shrouds of the impeller.CFX was used to perform numerical calculations and simulations of the flow field in the perforated impeller high-speed centrifugal pump under different cavitation numbers.The results show that the impeller opening can effectively reduce the pressure of the flow field,reduce the volume fraction of bubbles when cavitation occurs,alleviate the blockage of the bubble flow channel when cavitation occurs,and effectively improve the cavitation performance of the high-speed centrifugal pump.It provides a reference for further research on improving the cavitation performance of centrifugal pumps.

关 键 词：离心泵 性能 空化 开孔 叶轮 

分 类 号：TH311[机械工程—机械制造及自动化]