【摘要】 在自然循环过渡过程模拟实验中，真实地模拟反应堆堆芯及其控制系统是十分重要的。本文着重叙述了仿真堆芯的中子动力学模型和热工水力学模拟，并用 RETRAN程序的计算结果对模型及其相应程序进行了验证，获得了满意的结果。更多还原

【Abstract】 It’s very important to simulate the behaviors of nuclear reactor and its control system actually in the experiment of natural circulation transient.A set of models simulating reactor core characteristics is provided.It consists of neutron dynamical models,thermal- hydraulic models and control system models.The model and its corresponding code are proved by RETRAN,and satisfactory results are obtained.更多还原