【作者】 王欣； 匡波； 刘鹏飞； 袁浩然； 胡文军； 乔鹏瑞； 黎闫；

【Author】 Xin Wang;Bo Kuang;Pengfei Liu;Haoran Yuan;Wenjun Hu;Pengrui Qiao;Yan Li;School of Nuclear Science and Engineering,Shanghai Jiao Tong University;China Institute of Atomic Energy;

【机构】 上海交通大学核科学与工程学院； 中国原子能科学研究院；

【摘要】 基于流体力学理论,分析纳冷快堆(SFR)液体悬浮式非能动停堆组件(PSS)移动体在下落过程中所受水力阻力及其计算方法。根据PSS内部流道网络对水力阻力进行建模,将移动体下落运动离散化,使用准稳态结合瞬态修正的方法对运动过程进行计算。编写计算程序完成了PSS移动体在无保护失流条件下下落运动的时程分析,并得出该组件下落运动的位移、速度与水力阻力的关系。更多还原

【Abstract】 Basing on fluid mechanics,the hydraulic resistance of the moving body within Passive shutdown subassembly(PSS) for sodium cooled fast reactor(SFR) in the process of falling and its calculation method is analyzed.The hydraulic resistance is modeled according to the internal flow path of the PSS.The movement of the moving body is discretized,and the motion process is calculated by using quasi-steady state combined with transient correction method.Based on the above calculation method,the time course analysis of the falling motion of the moving body during the unprotected loss of flow accident(ULOF) is completed,and the relationship between the displacement,velocity and hydraulic resistance of the falling motion of the assembly are obtained.更多还原