农业机械学报2011，Vol.42Issue(7)：75-81,7.
低比转数离心泵叶轮内能量转换特性
Energy Conversion Characteristic within Impeller of Low Specific Speed Centrifugal Pump
摘要
Abstract
The flow field of a centrifugal pump with the specific speed of 60 was computed by CFD method, and the analysis was made to the characteristics of energy conversion within impeller from aspects of working process and energy loss process. The impeller was divided into 8 regions by the radius. Under different operating conditions, characteristics in each region were demonstrated the power of pressure and viscous force, distribution of power density and turbulence dissipation rate, composition and distribution of the energy loss. The results indicated that efficiency was poor and it was influenced by the inlet blade angle in inlet region of the impeller, the middle region of impeller was important to the energy conversion, the outlet region of impeller had appreciable impact on the performance, and fiction loss was the main component of the energy loss.关键词
离心泵/能量转换/低比转数/数值模拟Key words
Centrifugal pump/ Energy conversion/ Low specific speed/ Numerical simulation分类
机械工程引用本文复制引用
张翔,王洋,徐小敏,王洪玉..低比转数离心泵叶轮内能量转换特性[J].农业机械学报,2011,42(7):75-81,7.基金项目
江苏省科技服务业发展计划资助项目(BM2008375)和江苏大学博士创新计划资助项目(CX10B_004X) （BM2008375）
