原子能科学技术Issue(12)：2200-2207,8.DOI:10.7538/yzk.2014.48.12.2200
离心式上充泵小流量工况转换瞬态流动特性
Transient Flow Characteristics During Variable Operation to Small Flow Rate of Centrifugal Charging Pump
摘要
Abstract
In order to study transient flow characteristics during the process from charg‐ing operation to small flow rate operation of a centrifugal charging pump in the nuclear power plant ,CFX software was used for the simulation of transient process on the basis of RANS equation and RNG k‐εturbulence model .After test verification of the numeri‐cal method , the transient pressure and velocity characteristics of the charging pump were obtained from the simulation .The results show that the pressure in impellers , guide vanes and volute increase during the transient process .The vortexes generate and become serious with the flow rate decrease ,so the flow pattern is getting worse and worse .As a result ,the fluctuation amplitudes of pressure and velocity increase in this period .Because of the interference ,fluctuations of pressure and velocity near the inter‐face between impellers and guide vanes are stronger than that in other areas ,and the fluctuations in inner channel is more serious than that of the outside channel in the volute .关键词
离心式上充泵/核电站/变工况/漩涡/瞬态流动Key words
centrifugal charging pump/nuclear power plant/variable operating condi-tion/vortex/transient flow分类
机械制造引用本文复制引用
付强,张帆,袁寿其,朱荣生,陶艺..离心式上充泵小流量工况转换瞬态流动特性[J].原子能科学技术,2014,(12):2200-2207,8.基金项目
国家自然科学基金资助项目（51379091）；江苏省水利动力工程重点实验室资助项目（K13025）；江苏省普通高校研究生科研创新计划资助项目（KYLX＿1042）；江苏高校优势学科建设工程资助项目 （）
