Numerical Study on the Flow Characteristics of the Parallel Main Pumps of the Vertical Canned Motor

被引：0
|
作者：
Zhou X. [1 ]
Song Y. [1 ]
Yin J. [1 ]
Wang D. [1 ]
Xia shuan [2 ]
Feng L. [2 ]
机构：
[1] School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai
[2] Shanghai Nuclear Engineering Research and Design Institute, Shanghai
来源：
Hedongli Gongcheng/Nuclear Power Engineering | 2022年 / 43卷 / 02期
关键词：
Computational fluid dynamics (CFD); Flow field distribution; Main pump of the vertical canned motor; Parallel main pump;
D O I：
10.13832/j.jnpe.2022.02.0212
中图分类号：
学科分类号：
摘要：
Taking the reactor main coolant circulation pump (referred to as the main pump) of the vertical canned motor with a scale factor of 1:4 as the research object, two kinds of geometric models with two counter-rotating parallel main pumps (model 1) and two co-rotating parallel main pumps (model 2) are established. Using computational fluid dynamics (CFD) method to calculate the steady-state operation of the internal flow field of the two models of parallel main pumps, from the external characteristics of the main pumps, the inlet flow characteristics, the inflow quality, and the pressure distribution in the pipe, the comparative analysis of model 1 and model 2 is conducted. The results show that the performance of the main pumps A and B in model 1 are basically the same; the relative deviation of the flow rate of the main pumps A and B in model 2 is basically within 0.8%, the maximum value reaches 1.69%, the relative deviation of head is stable within 1%; the maximum relative deviation of the efficiency and shaft power reaches 6% and 8% respectively; compared with model 1, model 2 has better flow stability, higher inflow quality, and lower pressure distribution in the pipe, which is conducive to the long-term operation of the equipment. Copyright ©2022 Nuclear Power Engineering. All rights reserved.
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页码：212 / 218
页数：6
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