WIT Press


Transient Heat And Mass Transfer In Humid Porous Material Heated By Microsecond Rectangular Pulsed Energy Source Of Very High Power Density

Price

Free (open access)

Paper DOI

10.2495/MPF010131

Volume

30

Pages

10

Published

2001

Size

831 kb

Author(s)

F. Jiang & D. Liu

Abstract

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

Keywords