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Finite element analysis of coupled nonlinear heat and moisture transfer in wood
Chalmers University of Technology .
Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Chalmers University of Technology .ORCID iD: 0000-0001-5591-1045
Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
2006 (English)In: Numerical Heat Transfer, Part A Applications, ISSN 1040-7782, E-ISSN 1521-0634, Vol. 50, no 9, 851-864 p.Article in journal (Refereed) Published
Abstract [en]

A nonlinear model for analysing heat and moisture flow in wood during drying below the fiber saturation point is presented. The model used considers wood at a macro level without taking the various moisture transports mechanisms at the microscopic level into account. Based on the finite-element method, a coupled system of equations resulting from the adopted heat and moisture transfer equations is established and an iterative scheme is proposed. The numerical procedure is verified by a test example. In a two-dimensional analysis, the influence of the coupling on the combined heat and moisture transfer is studied for a board subjected to a typical kiln-drying condition. How well the results agree with those obtained by introducing a commonly applied simplification is discussed.

Place, publisher, year, edition, pages
2006. Vol. 50, no 9, 851-864 p.
National Category
Engineering and Technology Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
URN: urn:nbn:se:lnu:diva-41209DOI: 10.1080/10407780600669282OAI: oai:DiVA.org:lnu-41209DiVA: diva2:800329
Available from: 2015-04-02 Created: 2015-03-22 Last updated: 2016-05-03Bibliographically approved

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Ormarsson, SigurdurPetersson, Hans
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