Analysis of Rotor-Seizure-Induced Pressure Rise in a Nuclear Reactor Primary Cooling Loop  

作　　者：Haoyu Cui Congxin Yang Yanlei Guo Tianzhi Lv Sen Zhao 

机构地区：[1]College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou,730050,China [2]Key Laboratory of Fluid Machinery and System of Gansu Province,Lanzhou,730050,China

出　　处：《Fluid Dynamics & Materials Processing》2024年第12期2907-2926,共20页流体力学与材料加工（英文）

摘　　要：Most of existing methods for the safety assessment of the primary cooling loop of nuclear reactors in conditions of reactor coolant pump(RCP)failure(rotor seizure accident)essentially rely on the combination of one-dimensional theory and experience.This study introduces a novel three-dimensional model of the‘Hualong-1’(HPR1000)primary loop and uses the method of matching the resistance characteristics of the tube to ensure that the main pump operates at the rated operating condition.In particular,the three-dimensional unsteady numerical calculation of the RCP behavior in the rotor-seizure accident condition is carried out in the framework of the RNG k-εturbulence model.The related transient pressure surge law and hydraulic load response are obtained accordingly.

关 键 词：Axial-flow reactor coolant pump reactor primary loop rotor seizure accident condition pressure surge hydraulic load 

分 类 号：TL3[核科学技术—核技术及应用]