排灌机械工程学报2016，Vol.34Issue(7)：561-566,6.DOI:10.3969/j.issn.1674-8530.15.0088
多级离心泵水力性能数值预测涡量分析法
Numerical prediction of multistage centrifugal pump performance and analysis of vorticity of flow field
摘要
Abstract
In order to develop a CFD-based method for predicting hydraulic performance of multistage centrifugal pump , a multistage centrifugal pump is selected as the study object , and the information of flow field in the whole pump is obtained as well .Specially , the three-dimensional flow domain models of single-, two-and three-stage for the pump are generated and the hydraulic loss across each through-flow component in every stage in those models are obtained .It is shown that the hydraulic loss across a through-flow component in the single-stage model is basically similar to that across the counterpart in the two-or three-stage model , implying the loss is independent of the number of stages chosen and a model with less number of stages can be used to predict performance of a multistage centrifugal pump . By analyzing the energy loss in the models of multistage centrifugal pump to demonstrate the loss cha -racteristics and flow features in each stage , it is found that the vortex structure is nearly consistent across every stage except the diffuser in the last stage .By making use of energy analysis combined with vortex dynamics approach , a set of formulas for predicting the performance of multistage centrifugal pump are established according to a computational model with a few stages .关键词
多级离心泵/性能预测/涡动力学/内部流动Key words
multistage centrifugal pump/performance prediction/vortex dynamics/internal flow分类
农业科技引用本文复制引用
王洋,赵立峰,刘志超,宁超,朱振涛,谢山峰..多级离心泵水力性能数值预测涡量分析法[J].排灌机械工程学报,2016,34(7):561-566,6.基金项目
江苏高校优势学科建设工程项目；江苏大学研究生创新工程项目 （）
