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Finite-element analysis of coupled nonlinear heat and moisture transfer in wood

John Eriksson (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Sigurdur Ormarsson (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; H. Petersson
Numerical Heat Transfer; Part A: Applications (10407782 ). Vol. 50 (2006), 9, p. 851-864.
[Artikel, refereegranskad vetenskaplig]

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. Copyright © Taylor and Francis Group, LLC.



Denna post skapades 2009-11-24.
CPL Pubid: 102102

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Material- och beräkningsmekanik (2005-2017)

Ämnesområden

Materialteknik

Chalmers infrastruktur