离散辐射强度法计算辐射传热是热流密度法的一种修正方法,它引进了比辐射热流密度更原始的变量即辐射强度。本文采用紊流动量方程、K-ε双方程紊流模型及能量方程相结合的方法对冲击加热炉内温度场进行了数值模拟,其中能量方程的源项辐射传热采用离散辐射强度法计算,为以对流传热为主的综合传热过程提供了一种理论研究途径。 Discrete Radiation Intensity Calculation Radiative heat transfer is a modification of the heat flux density method, which introduces a more primitive variable, radiation intensity, than the radiant heat flux density. In this paper, the turbulent momentum equation, the K-ε two-equation turbulence model and the energy equation are combined to simulate the temperature field in the impact furnace. The radiation heat transfer of the source term of the energy equation is calculated by using the discrete radiation intensity method. It provides a theoretical research approach for the comprehensive heat transfer process based on convection heat transfer.