农业机械学报2011，Vol.42Issue(7)：61-65,5.
零流量工况下双叶片泵内部流场三维PIV测量
3-D PIV Test of Inner Flow in a Double-blade Pump under Zero Flow Rate Condition
摘要
Abstract
Inner flow in a double-blade pump impeller, whose specific speed is 111, was measured under zero flow rate condition by using 3-D PIV test technology. In order to ensure the accuracy of 3-D PIV test, the external trigger synchronization system which was made with fiber optic and equivalent calibration method was applied. In Visual C+ + 2005 platform, according to the velocity triangle, 3-D PIV velocity synthetic procedure was compiled to obtain the relative velocity synthesized by the absolute velocity and the circular velocity. The results showed that volute tongue had greater impact on the absolute velocity field within the impeller. There were vortices regions at three measurement surfaces within impeller, but the sizes and locations of vortices were different. Moreover, there was a low velocity region at the volute diffuser, the absolute velocity values in the region were less than 0. 62 m/s, and there were vortices at the volute diffuser. The axial velocities values of impeller passage, volute diffuser and region near volute tongue were different at three measurement planes.关键词
双叶片泵/零流量工况/内部流场/三维PIV/漩涡Key words
Double blade pump/ Zero flow rate condition/ Inner flow/ 3-D PIV/ Vortex分类
机械制造引用本文复制引用
王凯,刘厚林,袁寿其,谈明高,杨东升..零流量工况下双叶片泵内部流场三维PIV测量[J].农业机械学报,2011,42(7):61-65,5.基金项目
国家自然科学基金资助项目(51079062)、国家杰出青年科学基金资助项目(50825902)、江苏省"333高层次人才培养工程"科研项目和江苏省"六大人才高峰"资助项目 （51079062）
