Temperature and moisture content distributions in a humid porous material heated by microsecond rectangular pulsed energy source of very high power density are obtained in this paper. The parabolic heat and mass transfer model and the hyperbolic model are employed respectively to describe this kind of special drying process and the finite difference method (FDM) is used to numerically solve them. There are important discrepancies between the results predicted by the foregoing two models. The temperature variation predicted by the hyperbolic model has a pronounced wave nature. The drying rate predicted by the hyperbolic model has a similar varying tendency with the temperature of the heated boundary surface and at the early period of the drying process, the drying rate predicted by the hyperbolic model is larger than that predicted by the traditional parabolic model. For a multi-time pulse drying, if the time interval of two adjacent pulses is suitably designed, the drying rate and water removal predicted by the hyperbolic model are always higher than those predicted by the parabolic model. If the parabolic model is still used to compute the drying process, it will be completely frustrated. The computational results also show that it is more likely for non-Fourier and non-Fickian effects to appear in thinner material. It is easier for a pulsed energy source of shorter pulse duration and larger power density to result in non-Fourier and non-Fickian effects in humid material.
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