中文摘要：

本文在自主软件GTEA基础上,针对封闭方腔内参与性介质的辐射与自然对流耦合换热进行模拟,计算结果与文献中经典算例结果吻合较好。并分析了普朗克数和介质散射反照率的变化对方腔内温度和速度的影响,结果表明：随着普朗克数的减小,增强了辐射换热的影响;考虑各向同性散射介质时,随着散射反照率的减小,中心处的温度有所增大,靠近绝热壁面处,速度U的变化更剧烈。

英文摘要：

The numerical simulation of combined natural convection and radiation heat transfer with a participating medium in a square cavity was performed with the in-house software GTEA （General Transport Equation Analysis）. The results obtained by the present method are good consistent with the solutions of the literature. Further, the effects of Planck number and scattering albedo on the temperature distribution and velocity are studied numerically in the square cavity. It is found that the effect of radiation heat transfer increases with the decrease of Planck number. Taking into consideration the influence of isotropic scattering medium, the temperature of the central part of the square cavity becomes larger for smaller values of w. Next to the insulated wall, the horizontal velocity changes significantly.