热工水力关系式对堆芯物理热工耦合计算的敏感性分析

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Sensitivity Analysis of Thermal Correlations on Coupling Calculation of Reactor Physics and Thermal-Hydraulics

Department of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, China

摘要: 在SIMEXEC仿真平台上,耦合三维中子时空动力学仿真程序REMARK和热工水力实时仿真程序THEATRe,对秦山核电厂一期主冷却剂系统进行实时仿真。根据热工水力条件,在仿真程序中应用适用于相应条件的热工水力关系式,分析不同的热工水力关系式对反应性和功率分布反馈计算的敏感性。结果表明,单相换热系数计算关系式中,应用米海耶夫公式对反应性反馈计算的影响较大;沸腾换热系数公式中,应用Shah公式对反应性和功率分布反馈计算的影响较大;摩擦阻力关系式对反应性反馈计算不敏感。
- 敏感性 /
- 反应性 /
- 耦合 /
- 仿真 /
- 反馈
Abstract: For analyzing the sensitivity on reactivity feedbacks of thermal–hydraulics,Qinshan-I reactor coolant system is simulated by the coupling codes of nuclear reactor core physics simulation model REMARK and thermal–hydraulic model THEATRe on SIMEXEC simulation platform.Different correlations are applied in the coulping codes corresponding to the suitable thermal–hydraulic conditions.The sensitivity on reactivity feedbacks of the different correlations are analyzed with the simulation results.The result shows that MИxeeB correlation and Shah correlation are most sensitive in the heat transfer correlations,and the correaltions of computing flow friction are insensitive on reactive feedback.
- Sensitivity /
- Reactivity /
- Coupling /
- Simulation /
- Feedback