Numerical Simulation of Coupled Heat and Moisture Transfer in Porous Building Material

Abstract:

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Building envelope is a typical porous medium. The internal accumulation of moisture will not only affect the structural strength, but also cause the growth of bacterial in the structure, which can seriously affect the indoor air quality. In this work, the modified Luikov coupled heat and moisture transfer equation is derived by using finite difference method. A FORTRAN computer code is developed based on the supplied experiment conditions. The effect of various parameters (include temperature gradient, sorption isotherm, specific humidity etc.) on the coupled heat and moisture transfer and the relationship between the temperature gradient and the moisture gradient are discussed. The results show that the simulation results agree well with the experimental data.

Info:

Periodical:

Advanced Materials Research (Volumes 287-290)

Edited by:

Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li

Pages:

3106-3111

DOI:

10.4028/www.scientific.net/AMR.287-290.3106

Citation:

X. B. Zhang et al., "Numerical Simulation of Coupled Heat and Moisture Transfer in Porous Building Material", Advanced Materials Research, Vols. 287-290, pp. 3106-3111, 2011

Online since:

July 2011

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Price:

$35.00

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