Abstract In this study fundamental models were used by considering heat and mass multiphase transport in a porous medium which was coupled with the intermittent microwave convective combination drying process. The models were validated by experimental data sourced from references, and independent analysis was conducted to select a suitable mesh and time step. Sensitivity analysis was performed using different empirical formula-type input parameters. The water activity and the thermal conductivity mainly influenced on the temperature of the sample, and had no effect on the simulation outputs of moisture content; relative permeability of gas and the capillary diffusivity mainly had an impact on the moisture content of the sample; the specific heat, the binary diffusion coefficient and the dielectric loss factor affected both temperature and moisture content at the same time; the relative permeability of water and the dielectric constant both had no effect on the simulation results. In addition, a sample with a lower thermal conductivity, a higher capillary diffusivity or a higher binary diffusion coefficient tended to form a drier interior as well as a moister surface; a sample with a higher thermal conductivity or a higher specific heat tended to form a more uniform temperature; a sample with a higher capillary diffusivity tended to form a more uniform moisture content.

中文翻译：

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基于多相多孔介质模型的间歇微波对流干燥灵敏度分析

摘要 在这项研究中，通过考虑与间歇微波对流组合干燥过程耦合的多孔介质中的热量和质量多相传输，使用了基本模型。这些模型通过来自参考文献的实验数据进行验证，并进行独立分析以选择合适的网格和时间步长。使用不同的经验公式型输入参数进行敏感性分析。水分活度和热导率主要影响样品的温度，对水分含量的模拟输出没有影响；气体的相对渗透率和毛细管扩散率主要影响样品的水分含量；比热，二元扩散系数和介质损耗因子同时影响温度和含水量；水的相对渗透率和介电常数都对模拟结果没有影响。此外，具有较低热导率、较高毛细管扩散率或较高二元扩散系数的样品倾向于形成更干燥的内部以及更潮湿的表面；具有较高热导率或较高比热的样品倾向于形成更均匀的温度；具有较高毛细管扩散率的样品往往会形成更均匀的水分含量。较高的毛细管扩散系数或较高的二元扩散系数倾向于形成较干燥的内部和较潮湿的表面；具有较高热导率或较高比热的样品倾向于形成更均匀的温度；具有较高毛细管扩散率的样品往往会形成更均匀的水分含量。较高的毛细管扩散系数或较高的二元扩散系数倾向于形成较干燥的内部和较湿的表面；具有较高热导率或较高比热的样品倾向于形成更均匀的温度；具有较高毛细管扩散率的样品往往会形成更均匀的水分含量。