流体机械

2007, No.424(10) 9-13

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基于数值模拟的离心泵性能预测
Performance Prediction of Centrifugal Pump Based on the Method of Numerical Simulation

王秀勇;王灿星;
WANG Xiu-yong,WANG Can-xing (Zhejiang University,Hangzhou 310027,China)

摘要(Abstract):

应用CFD软件FLUENT对离心泵内部整个三维流场进行数值模拟。在0~1.35Qopt范围内对14个不同工况点的扬程、轴功率和效率等性能参数进行了预测,并根据计算结果绘制了性能曲线。通过对由不同计算域组成的计算结果进行比较,证明了当计算域包含叶轮前后腔及密封环间隙时计算结果更准确、更合理。本文为检验离心泵的性能提供了一种进行"虚拟试验"的方法,在新产品设计开发的过程中具有一定的应用价值。
A CFD method has been developed to simulate the entire three-dimensional flow field in a centrifugal pump.By use of this method,the performance of pump such as head,shaft power and efficiency are predicted,based on the calculation of fourteen different operating conditions in the flow range from 0 to 1.35Qopt.Through the comparison of simulating results for two kinds of fields which are composed of different regions,it is proved that the result will be more accurate when the front and back chambers in the impeller,and the seal clearance are involved in the calculating regions.This CFD method can be used for "virtual experiment",that is,used to test the performance of a centrifugal pump,and it will be helpful for the design and optimization of a new centrifugal pump.

关键词(KeyWords): 离心泵;数值模拟;性能预测;全三维流场
centrifugal pump;numerical simulation;performance prediction;three-dimensional flow field

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作者(Author): 王秀勇;王灿星;
WANG Xiu-yong,WANG Can-xing (Zhejiang University,Hangzhou 310027,China)

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