【作者】 王悦荟； 刘聪； 王鹏飞； 马腾跃； 许忠斌； 阮晓东；

【Author】 WANG Yuehui;LIU Cong;WANG Pengfei;MA Tengyue;XU Zhongbin;RUAN Xiaodong;Institute of Process Equipment, Zhejiang University;School of Engineering, Zhejiang University City College;State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University;

【机构】 浙江大学能源工程学院化工机械研究所； 浙江大学城市学院机械电子工程学系； 浙江大学流体动力与机电系统国家重点实验室；

【摘要】 现为研究由蒸汽发生器下封头引起的入流畸变对泵进口速度场及进口涡的影响,将蒸汽发生器下封头与核主泵进行建模,采用CFD方法对其耦合模型进行全三维流场仿真计算。结果表明:核主泵的叶片旋转会对其进口流场产生一定影响,当蒸汽发生器出口管很短时,核主泵的叶片旋转效应会对进口流场起到一定的整流作用。与此同时,由于蒸汽发生器引起的入流畸变在进口管内形成一个环形涡带,使得叶轮各流道内流体受载不均,降低了叶轮的安全性和稳定性。更多还原

【Abstract】 In order to study the influence of non-uniform inflow caused by the steam generator channel head on the velocity field and inlet vortex of the reactor coolant pump(RCP), the model of the l steam generator channel head and the reactor coolant pump is modeled, and the three-dimensional flow field is simulated by CFD method. The results show that the blade rotation of the reactor coolant pump has a certain effect on the inlet flow field. When the steam generator outlet pipe is short, the blade rotation effect of the reactor coolant pump can rectify the inlet flow field. At the same time, the inlet flow distortion caused by the steam generator channel head forms a ring vortex band in the inlet pipe, which makes the fluid load in each passage of the impeller uneven, and reduces the safety and stability of the impeller.更多还原