Numerical Investigation of a First Stage of a Multistage Centrifugal Pump: Impeller, Diffuser with Return Vanes, and Casing
Numerical Investigation of a First Stage of a Multistage Centrifugal Pump: Impeller, Diffuser with Return Vanes, and Casing
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DOI：
10.1155/2013/578072
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
Nicolas La Roche-Carrier;G. Ngoma;W. Ghié
中科院分区：
文献类型：
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作者：
Nicolas La Roche-Carrier;G. Ngoma;W. Ghié
本文对多级离心泵第一级内的液体流动进行了数值研究，该泵由叶轮、带回流导叶的扩压器和泵壳组成。采用连续性方程和Navier-Stokes方程，湍流模型和标准壁面函数。为了改进多级离心泵第一级的设计，分析了叶轮叶片高度、导叶高度、叶轮叶片数、导叶数、导叶回流数以及壁面粗糙度对多级离心泵第一级性能的影响。所获得的结果表明，所选择的参数影响泵头，制动马力，和效率在一个强大的，但不同的方式。为了验证所开发的模型，将数值模拟的结果与泵制造商的实验结果进行了比较。
This paper deals with the numerical investigation of a liquid flow in a first stage of a multistage centrifugal pump consisting of an impeller, diffuser with return vanes, and casing. The continuity and Navier-Stokes equations with the turbulence model and standard wall functions were used. To improve the design of the pump's first stage, the impacts of the impeller blade height and diffuser vane height, number of impeller blades, diffuser vanes and diffuser return vanes, and wall roughness height on the performances of the first stage of a multistage centrifugal pump were analyzed. The results achieved reveal that the selected parameters affect the pump head, brake horsepower, and efficiency in a strong yet different manner. To validate the model developed, the results of the numerical simulations were compared with the experimental results from the pump manufacturer.