Results of this thesis provide guiding significance to waterpower design of impeller of the low specific speed centrifugal pump.
对低比转速离心泵叶轮的水力设计具有一定的指导意义。
Especially the flow of compound impeller in the centrifugal pump at low specific speed is more complex and has more problems need urgently to resolve.
尤其是低比转速复合叶轮离心泵内部的流动更加复杂，亟待解决的问题也更多。
The research on design method and test for low specific speed impeller are recounted specifically. It is of very importance to further develop and use in low-flow chemical centrifugal pumps.
着重叙述了低比转数叶轮的设计方法、试验研究，对进一步开发、应用小流量化工用离心泵具有重要指导意义。
The characteristics of low specific speed centrifugal pump are introduced, and the grid generation method for impeller passageway and the governing equations of calculation are also expatiated.
简要介绍低比速离心泵特点，阐述计算的控制方程和叶轮通道网格划分方法。
Based the brake horsepower characteristics of low specific speed centrifugal pump and the required features of pumps used for agriculture, the concept of non - overload centrifugal pumps is conceived.
针对农用泵(运行工况多变且出口无流量调节阀)的特点和低比转速离心泵的轴功率在大流量区运行易过载的特性，提出了无过载离心泵的概念。
Based on the low-specific speed centrifugal pump model of IS 50-32-160, two impellers are designed with and without splitter blades.
基于低比速离心泵is 50 - 32 - 160模型，对有、无分流叶片的设计方案全流场进行了数值模拟和对比分析。
A practical example showed that the efficiency of pumps with low specific-speed could be improved by using the calculation method presented, so that the design theory of such pumps was substantiated.
实例表明：提出的计算方法能够提高低比转速离心泵的效率，充实了低比转速离心泵的设计理论。
A practical example showed that the efficiency of pumps with low specific-speed could be improved by using the calculation method presented, so that the design theory of such pumps was substantiated.
实例表明：提出的计算方法能够提高低比转速离心泵的效率，充实了低比转速离心泵的设计理论。
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