关键词: 高速离心泵, 开式叶轮, 设计方法, 试验研究, 数值模拟

Abstract: The optimum design system based on the N-S equation and S-A turbulent model is carried out on low-specific open-impeller high-speed centrifugal pump, which includes four parts, optimum design of basal parameters, performance prediction, flow analysis and information feedback. The design example and experimental study are carried out on an open high-speed centrifugal pump. The satisfied performances are obtained, the head-capacity characteristic curve of pump almost is a straight line, the head coefficient reaches above 0.7, the suction performance also satisfies the demand, the relative velocity and pressure distribution in impeller channel are reasonable. This shows that the excellent-performance low-specific open-impeller high-speed centrifugal pump can be gained adopting the increasing-capacity design method. The proposed method is of importance for the design of open-impeller centrifugal pump.

Key words: Design method, Experimental study, High-speed centrifugal pump, Numerical simulation, Open impeller