THE WATER POTENTIAL CONCEPT A WOOD DRYING FINITE ELEMENT MODEL BASED ON
作者:
A. Cloutier,
Y. Fonin,
G. Dhatt,
期刊:
Drying Technology
(Taylor Available online 1992)
卷期:
Volume 10,
issue 5
页码: 1151-1181
ISSN:0737-3937
年代: 1992
DOI:10.1080/07373939208916511
出版商: Taylor & Francis Group
关键词: aspen wood;effective water conductivity;two-dimensional nonlinear problems;porous media
数据来源: Taylor
摘要:
A two-dimensional finite element model of isothermal wood drying based on the waterpotential concept is presented. An original algorithm iS used to update moisture content and water potential during the computations. The moisture content water potential relationship and the effective water Conductivty functions obtained during independent experiments are used as model parameters. In order to assess the possibilities and limitations of this approach. the calculated drying curves and moisture content profiles are compared to results obtained during convective drying of aspen sapwood at 20, 35, and 50°C, from full saturation to a final moisture content of about 10 %. The experimental and calculated results are in reasonable agreement although differences are observed at intermediate drying times. These differences could be attributed to the description of the convective boundary condition or to possible thermal effects.
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