利用Ｗｈｉｔａｋｅｒ［１］的体积平均理论，推得一组描述多孔介质对流干燥过程中内部热质迁移的宏观方程组，进一步归纳整理出了关于液体饱和度、温度和气相总压力的耦合方程，对该方程组应用ＡＤＩ法进行离散，并对粘土砖对流干燥过程进行了二维数值分析和实验测定，所获得的液体饱和度、温度及压力变化过程正确地揭示了干燥过程中介质内部情况。 Using the volume average theory of Whitaker [1], a set of macroscopic equations describing the internal thermal mass transfer during convective drying of porous media was derived, and the coupled equations for liquid saturation, temperature, and total gas pressure were further summarized. The equations were discretized using the ADI method, and the two-dimensional numerical analysis and experimental determination of the convective drying process of the clay bricks were carried out. The liquid saturation, temperature, and pressure changes obtained clearly reveal the internal conditions of the media in the drying process.