高温气冷堆一回路舱室的辐射换热计算模型

Calculation of Radiation in the Primary Cavity of HTR-10

介绍了高温气冷堆非能动余热排出系统的辐射换热计算方法。从基本的辐射换热微分方程出发,建立了一套完整的辐射换热数值计算模型,推导了辐射角系数求解公式,建立了3种辐射数值计算方法。应用超松弛数值计算方法求解了方程组。将计算结果与文献例题进行了比较,符合很好。分析比较了高度与间隙比及不同发射率对两种不同方法计算结果的影响。

Three methods are introduced to calculate thermal radiation in High Temperature Gas-cooled Reactor(HTGR).From the basic differential equations of thermal radiation,an intact model is constructed for thermal radiation calculation.At the same time,some equations of radiant angle coefficient are deduced.Therefore,three numerical methods are developed.Using the successive over-relaxation numerical iteration method,the radiation equations are successfully resolved.The calculation results are in good agreement with those presented in an example of the literature.Finally,the effects of the height /gap and emissivity on two different methods are compared and discussed.