离心泵内空蚀流动的数值模拟  

Numerical Simulation of Cavitating Flow in a Centrifugal Pump

作　　者：刘宜[1] 张文军[1] 邱文斌 王岩[1] 齐学义[1] 

机构地区：[1]兰州理工大学流体动力与控制学院,甘肃兰州730050 [2]甘肃电力局刘家峡水电厂,甘肃永靖731600

出　　处：《甘肃科学学报》2008年第3期93-95,共3页Journal of Gansu Sciences

基　　金：甘肃省科技攻关计划项目(2GS047-A52-011)

摘　　要：为了研究离心泵内部的空蚀流动,将一种完整空化模型和混合流体两相流模型相结合,应用于离心泵全流道内定常空蚀流动的数值模拟.根据模拟的结果,分别预测了离心泵在大流量、设计流量和小流量情况下运行时,流道内空蚀发生的部位和程度,重点考察了流量的变化对离心泵空蚀性能的影响,为离心泵在特定工况下运行时空蚀性能预测提供了理论依据.In order to study the cavitating flow in a centrifugal pump,the numerical simulation of steady cavitating turbulent flow in the whole flow passage of a centrifugal pump has been carried out by using a full cavitation model and a mixed two-phase flow model. Based on the simulation results, the region and the degree of cavitation occurring in the flow passage of the turbine are respectively, predicted with a large flow,a low flow and a design flow. The effects of the flow on the cavitation performance of the turbine are specially examined. The simulation results can provide valid reference for the cavitation performance of the turbine.

关 键 词：离心泵 空蚀流动 数值预测 

分 类 号：TK731[交通运输工程—轮机工程]