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Numerical Simulation of Coupled Radiation-Convection Heat Transfer of High-Temperature Developing Flow in Tube

机译：管内高温展开流辐射-对流耦合传热的数值模拟

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By combining the discrete ordinate method with the control volume method, the coupled radiation-convection heat transfer of high-temperature developing laminar flow in a tube is investigated numerically. The radiative transfer is solved by the discrete ordinate method and its contribution to thermal balance is dealt with as a source term in the energy equation, which is solved, as well as the momentum equation, by the control volume method. The effects of medium optical thickness and tube wall temperature on the temperature distribution in medium as well as the heat flux and local Nusselt number on wall are analyzed. The results show that the radiation heat transfer of high-temperature medium influences the temperature distribution and convection heat transfer greatly, and plays an important role in the heat transfer of developing laminar flow in a tube.
机译：通过将离散纵坐标法与控制体积法相结合，数值研究了管内高温展开层流的辐射-对流耦合传热。辐射传递通过离散纵坐标法求解，其对热平衡的贡献作为能量方程式中的源项处理，而动量方程式则通过控制量法进行求解。分析了介质的光学厚度和管壁温度对介质中温度分布的影响，以及壁上的热通量和局部Nusselt数。结果表明，高温介质的辐射换热对温度分布和对流换热有很大影响，并且在管内层流发展中起着重要的作用。

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