排灌机械工程学报
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排灌机械工程学报  2019, Vol. 37 Issue (8): 645-649    DOI: 10.3969/j.issn.1674-8530.19.0144
泵理论与技术 最新目录 | 下期目录 | 过刊浏览 | 高级检索 Previous Articles  |  Next Articles  
不同数值计算方法对核主泵压力脉动性能的数值模拟
宋煜1,顾希尧1,刘迎圆2,尹俊连1,王德忠1*
1. 上海交通大学机械与动力工程学院, 上海 200240; 2. 上海师范大学信息与机电工程学院, 上海 200234
Numerical simulation on pressure pulsation characteristic of nuclear coolant pump by different numerical methods
YU Song1, GU Xiyao1, LIU Yingyuan2, YIN Junlian1, WANG Dezhong1*
1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. The College of Information, Mecha-nical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China
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摘要 为了研究泵压力脉动数值计算中关键设置对其产生的影响,以包含密封口环间隙的核主泵全流道水力模型为研究对象,在不同时间步以及不同的边界条件下进行了数值计算.首先对核主泵的稳态性能进行了分析,得到核主泵在不同工况下内部的流场信息;其次,针对压力脉动计算,采用了3种不同的时间步(叶轮每旋转0.5°,1°和2°的时长)进行分析.结果表明,当所取的时间步均较小的情况下,不同的时间步长对压力脉动时域信号有一定影响,但其频域信号基本一致;最后选取不同的边界组合条件对压力脉动预测的结果进行研究,其中,选取进口总压-出口流量边界,进口流量-出口压力边界,泵进出口不单独设置边界,并采用1种连接进出口流体域的闭式回路计算模型.相比前2种边界条件设置,闭式回路边界条件预测的压力脉动信号较为规律,压力脉动幅值增大明显.
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宋煜
顾希尧
刘迎圆
尹俊连
王德忠*
关键词核主泵   数值模拟   压力脉动   边界条件     
Abstract: In order to study the influence of the key settings in the pump pressure pulsation numerical simulation, the full-flow hydraulic model including the seal ring gap was numerically calculated under different time steps and different boundary conditions. Firstly, the steady state performance of the pump was analyzed. The internal flow field information of the pump under different working conditions was obtained and analyzed. Secondly, for the pressure pulsation calculation, three different time steps(the duration of the 0.5? 1?and 2?rotation of the impeller)were used for analysis, and when the time steps taken are small, it has a certain influence on the pressure pulsation time domain signal, but its frequency domain signal is basically the same. Finally, different boundary combination conditions were selected to study the results of pressure pulsation prediction. Among them, inlet total pressure, outlet flow boundary; inlet flow, outlet pressure boundary were selected. In addition the pump inlet and outlet were not separately set boundaries, namely a fluid domain connected to the inlet and outlet is used, which was called closed loop calculation model. Compared with the first two boundary conditions, the pressure pulsation signal predicted by the closed loop boundary condition is more regular, and the pressure pulsation amplitude increases significantly.
Key wordsreactor coolant pump   numerical simulation   pressure pulsation   boundary condition   
收稿日期: 2017-10-28;
基金资助:第一作者简介:宋煜(1994—),男,山西忻州人,博士研究生(sy7549353@sjtueducn),主要从事核主泵水力研究
引用本文:   
宋煜,顾希尧,刘迎圆等. 不同数值计算方法对核主泵压力脉动性能的数值模拟[J]. 排灌机械工程学报, 2019, 37(8): 645-649.
SONG Yu-,GU Xi-Yao-,LIU Ying-Yuan- et al. Numerical simulation on pressure pulsation characteristic of nuclear coolant pump by different numerical methods[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(8): 645-649.
 
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