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首页> 外文期刊>ISRN Mechanical Engineering >Numerical Investigation of a First Stage of a Multistage Centrifugal Pump: Impeller, Diffuser with Return Vanes, and Casing
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Numerical Investigation of a First Stage of a Multistage Centrifugal Pump: Impeller, Diffuser with Return Vanes, and Casing

机译：多级离心泵第一级的数值研究：叶轮，带回流叶片的扩散器和机壳

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摘要

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.
机译：本文涉及多级离心泵第一级中的液体流动的数值研究，该级联泵由叶轮，带回流叶片的扩散器和壳体组成。使用具有湍流模型和标准墙函数的连续性和Navier-Stokes方程。为了改善泵的第一级设计，叶轮叶片高度和扩压器叶片高度，叶轮叶片数量，扩压器叶片和扩压器返回叶片以及壁粗糙度高度对多级离心泵第一阶段性能的影响被分析。获得的结果表明，所选参数以强烈但又不同的方式影响泵的扬程，制动马力和效率。为了验证开发的模型，将数值模拟的结果与泵制造商的实验结果进行了比较。

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