摘要
采用ANSYS-Workbench与CFX实现的流-固热双向耦合技术对主泵模型泵内部流场的压力脉动进行数值模拟分析,研究了流-固热耦合作用下反应堆冷却剂泵(简称"主泵")叶片的压力脉动特性。根据压力脉动时域和频域情况,探讨产生压力脉动的主要原因,同时对不同流量下的压力脉动情况进行对比。叶轮进出口、导叶中间和导叶出口4个截面的压力脉动幅值从轮毂到轮缘均升高;叶轮进口和出口的压力脉动主要由叶轮转动频率决定,随着流体不断远离叶轮,叶轮对流体压力脉动的影响逐渐减弱;对比不同流量工况结果,设计工况的脉动幅值最小。
In order to research the pressure fluctuation characteristics of flow field of mixed flow nuclear primary pump, this study used the technique of ANSYS-Workbench and CFX fluid solid heat coupling to do numerical simulation analysis for model pump. According to the situation of pressure fluctuation of time domain and frequency domain, the main cause of pressure fluctuation was discussed. For different flow, the pressure fluctuations were compared. This study shows it is feasible that large eddy simulation method is used for the research of pressure fluctuation. The pressure fluctuation amplitudes of four sections are increasing from wheel hub to wheel rim. The pressure fluctuation of inlet and outlet of impeller depends on the rotational frequency of impeller. Along with the fluid flowing away from the impeller, the effect of the impeller on the fluid pressure fluctuation weakens gradually. Comparing the different results of three flow conditions, the pressure fluctuation in design condition flow is superior to the others.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2013年第4期47-52,共6页
Nuclear Power Engineering
基金
江苏高校优势学科建设工程项目(苏财教[2011]8号)
国家自然科学基金(51109094)
关键词
主泵
流
固热耦合
压力脉动
模型泵
Nuclear primary pump, Fluid solid heat coupling, Pressure fluctuation, Model pump
