基于压力修正方法的高温气冷堆模拟

Simulations of the thermal-hydraulics in a high temperature gas-cooled reactor based on the pressure correction method

高温气冷堆热工水力过程模拟是高温气冷堆模拟机开发的关键技术之一,采用流体网络建立流动过程计算模型,将压力修正方法应用到流体网络求解中,传热网络建立传热过程计算模型,并实现流体网络与传热网络的耦合计算,建立了适用于高温气冷堆模拟机的热工水力过程模拟方法,采用组件搭建的方式模拟热工水力过程。将模拟方法应用到带有分支汇合的管路和中间换热器的热工水力过程模拟中,结果表明:压力修正方法的应用使得流体网络具有良好的收敛性,稳态工况计算结果具有良好的稳态精度,动态过程计算能够正确响应热工水力过程的特点,模拟结果与理论分析一致。

Simulations of the thermal-hydraulics in a high temperature gas-cooled reactor（HTGR） are critical to the development of HTGR simulators.The flow network is solved using the pressure correction method to simulate the flow and heat transfer by a heat transfer network.The calculation couples flow and heat transfer networks.Including some generic components,the simulations model the thermal-hydraulic processes in pipelines with branches and intermediate heat exchangers.The results show that the pressure correction method convergences well.The simulations have good steady accuracy-state and dynamic response.