基于流动与传热网络的HTR-PM堆内热工水力模拟

球床模块式高温气冷堆核电站（HTR-PM）全尺寸模拟机的开发是示范工程的重要组成部分，HTR-PM堆内热工水力过程的模拟是模拟机开发的关键技术之一。本文针对堆内热工水力过程的模拟进行了研究，根据堆内几何结构和热工水力过程的特点，采用组件搭建的方式建立了HTR-PM堆内流动与传热过程的计算模型，基于所建立的流动与传热网络模拟方法，编制了相应的模拟计算程序，实现了HTR-PM堆内热工水力过程的模拟，给出了反应堆50%FP、100%FP稳态工况、控制棒误提升事故工况的模拟结果，通过与设计分析程序THERMIX的比较进行了验证。对比结果表明，模拟方法和基于流动与传热网络的计算模型能够满足模拟机的开发要求，反映了堆内热工水力过程的特点。

Simulation of Thermal-Hydraulic Process in Reactor of HTR-PM Based on Flow and Heat Transfer Network

The development of HTR-PM full scale simulator (FSS) is an important part in the project. The simulation of thermal-hydraulic process in reactor is one of the key technologies in the development of FSS. The simulation of thermal-hydraulic process in reactor was studied. According to the geometry structures and the characteristics of thermal-hydraulic process in reactor, the model was setup in components construction way. Based on the established simulation method of flow and heat transfer network, a Fortran code was developed and the simulation of thermal-hydraulic process was achieved. The simulation results of 50%FP steady state, 100%FP steady state and control rod mistakenly ascension accidents were given. The verification of simulation results was carried out by comparing with the design and analysis code THERMIX. The results show that the method and model based on flow and heat transfer network can meet the requirements of FSS and reflect the features of thermal-hydraulic process in HTR-PM.