核电站穹顶内热环境影响因素研究

Study on the Influencing Factors of Internal Thermal Environment of Dome in Nuclear Power Station

以CPR1000核电站R55区穹顶为研究对象,基于计算流体力学(CFD)技术,应用P-1辐射模型对穹顶内部温度场进行了3D稳态数值模拟。分析了太阳辐射、进口风速及环境气温对核电站穹顶内热环境的影响。结果表明:以环境气温对穹顶内热环境的影响最为明显,太阳辐射次之,进口风速的影响最小。所得结果为穹顶内热环境的改善研究提供了依据。

The p-1 radiation model was applied to solve the temperature profiles inside the dome.The 3D numerical simulation was done based on the CFD technique for the dome in R55-region of CPR1000 nuclear power station.The effect of solar radiation,inlet velocity and ambient temperature on internal thermal environment of dome was analyzed.The results showed that the effect of ambient temperature on internal thermal environment was most obvious,the solar radiation was less obvious and the inlet velocity was the least obvious.The results obtained provide the basis for the research of improving the internal thermal environment of dome in nuclear power station.