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利用CFD方法对核电厂稳压器波动管以及与之相连接主管道内反应堆冷却剂进行流固耦合共轭流动传热计算,获得在升温瞬态条件下稳压器波动管内冷却剂的温度场分布,证实在水平段内可产生明显的热分层结构。在此基础上,利用有限元分析软件,结合波动管的结构特征,建立稳压器波动管的热分层应力计算模型,并对稳压器波动管的应力水平进行计算分析,给出稳压器波动管中的应力场分布特性。
CFD method is used to calculate the temperature field distribution of the coolant in the fluctuating tube of the regulator under the condition of transient heating, through the fluid-solid coupling and conjugate heat transfer calculation of the reactor’s fluctuating tube and the reactor coolant connected with it. , Confirmed that in the horizontal section can produce obvious thermal stratification structure. On this basis, using finite element analysis software, combined with the structural features of the corrugated tube, the thermal stratification stress calculation model of the corrugated tube of the stabilized pressure vessel is established. The stress level of the corrugated tube is calculated and analyzed, Stress Field Distribution in Wave Tube Fluctuation.