Open Access

ARTICLE

NUMERICAL ANALYSIS OF A PROTOTYPE PUMP AS TURBINE AT DIFFERENT WORKING CONDITIONS

Xiao Sun^a, Fan-Kang Zeng^a, Jia-Bing Yang^a, Feng-Lin Zhou^a, Yu-Liang Zhang^b,*

a School of Mechanical Engineering, Hunan University of Technology, Zhuzhou, 412007, China
b College of Mechanical Engineering, Quzhou University, Quzhou, 324000, China
* Corresponding author: zhang002@sina.com

Frontiers in Heat and Mass Transfer 2021, 17, 1-6. https://doi.org/10.5098/hmt.17.5

Abstract

In order to better study the internal flow characteristics of centrifugal pump as turbine, CFX software is employed to carry out numerical simulation to obtain flow field under different working conditions for pump as turbine based on the standard k - epsilon turbulence model and the SIMPLEC algorithm. The efficiency curves of the pump and pump as turbine are obtained under different working conditions. The results show that the effciency characteristics of the pump change greatly during the process of pumping. The efficiency of the turbine is higher than that of the pump under the respective optimal operating conditions. The internal flow characteristics of a turbine change greatly with the change of flow. By analyzing the related parameters in the internal flow structure, the internal characteristics of the turbine under different flow conditions are showed.

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Keywords

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