基于多孔介质气流干燥理论,建立了纸张穿透式热风干燥的数学模型,并对数学模型进行了分析求解,最后通过自制实验装置进行了热风干燥实验以验证模型的可靠性.实验结果表明：模型计算的纸页水分及温度随干燥时间的变化趋势与实测数据吻合度较高,常速干燥期和降速干燥期模型计算数据略高于实测数据,水分含量相差4个百分点.证明该数学模型和数值计算方法具有较高的可靠性,可为纸张穿透式热风干燥的设计和操作优化提供理论依据

Based on the air drying theory of porous media,a mathematical model describing the through-air drying（TAD） process of paper was built and numerically analyzed.Then,the reliability of the model was validated by hot-air drying experiments using a self-developed experimental device.The results show that the calculated paper moisture and temperature varying with the drying time accord well with the measured ones,and that,in the normal drying period and the decreasing period,the calculated values are only 4 percent higher than the measured ones.It is thus concluded that the proposed mathematical model and numerical calculation method are both reliable,which provides a theoretical basis for the design and operation optimization of TAD of paper