Modelling the process of moisture absorption in three dimensions by wood samples of various shapes: cubic, parallelepipedic
✍ Scribed by A. Droin-Josserand; J. L. Taverdet; J. M. Vergnaud
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 593 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0043-7719
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✦ Synopsis
Modelling the process of absorption of moisture by wood samples of various shapes and dimensions: cube and parallelepipedes, has been studied. The mathematical model is based on numerical method with finite differences, and takes into account all the facts: the external resistance with the coefficient of moisture transfer at the atmosphere-wood interface, the internal resistance with the diffusion of moisture within the wood. The problem is rather complex, because the rate of diffusion varies with the direction chosen in the wood, and because of the concentration-dependent diffusivities. Not only the model is able to obtain the kinetics of absorption of moisture in good agreement with experiments done with samples of various shapes, but it is also capable of calculating the profiles of concentration of moisture developed within the sample, and so affording a further insight on the process of moisture absorption.