摇摆条件对反应堆系统热工水力特性的影响

Effect of Swing Conditions on Thermal Hydraulic Characteristics of Reactor System

船用核动力装置在海洋环境中受到风浪等影响会发生运动。摇摆条件对一回路系统热工水力特性影响比较复杂。为了研究摇摆条件影响,开发了海洋条件系统热工水力分析程序STAC,并利用实验对程序海洋附加力模型进行验证。利用系统程序STAC对摇摆条件下反应堆系统热工水力特性进行模拟研究,结果表明:摇摆条件下强迫循环工况的参数变化比自然循环工况的参数变化小;与纵摇相比,横摇运动影响较大;摇摆条件下系统热工参数存在波动幅值最小的周期点。

Under ocean conditions,the marine nuclear power device will move by the effects of wind and wave.The effect of the swing condition on the thermal hydraulic characteristics of the primary loop system is complicated.In order to study the effect of swing conditions,a thermal-hydraulic analysis program for ocean condition named STAC was developed,and the ocean additional force model was validated by experiments.The system program STAC was used to simulate the thermal hydraulic characteristics of the reactor system under swing conditions.The results show that the parameter changes of the forced circulation under the swing condition are smaller than those of the natural circulation.Compared with the pitching condition,the rolling condition has greater influence on reactor system.There is a specific fluctuation period,with which the fluctuation amplitude is smallest.