NDLI: Parameter estimation of moisture diffusivity in wood by an inverse method

Content Provider	Springer Nature Link
Author	Kang, Wook Lee, Yong Hun Chung, Woo Yang Xu, Hui Lan
Copyright Year	2009
Abstract	This study focuses on the transfer of bound water and liquid water in wood. The moisture changes and distribution of six wood species (three softwoods and three hardwoods) were investigated in the longitudinal direction exposed to long-term moisture sorption in static environmental conditions. Most species used for the experiment reached an estimated maximum moisture content, which indicated that there might be no significant hysteresis in the capillary pressure curve due to air entrapment. The experimental data for the different samples were found to vary considerably. Using initial values obtained by the Boltzmann transformation, the Levenberg-Marquardt method was used to determine the moisture diffusivity from measured moisture content changes with time and moisture profiles. The validity was ascertained by comparing the numerical results with the corresponding experimental measurements. There was a point of discontinuity and an abrupt change in the slope of the diffusivity function around the fiber saturation point, which might slow the numerical solution process.
Starting Page	83
Ending Page	90
Page Count	8
File Format	PDF
ISSN	14350211
Journal	Journal of Wood Science
Volume Number	55
Issue Number	2
e-ISSN	16114663
Language	English
Publisher	Springer Japan
Publisher Date	2009-01-10
Publisher Place	Japan
Access Restriction	Subscribed
Subject Keyword	Inverse method Sorption Moisture transfer Parameter estimation Finite volume method Characterization and Evaluation of Materials Materials Science Wood Science & Technology
Content Type	Text
Resource Type	Article
Subject	Biomaterials Forestry

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