Finite-element analysis of coupled nonlinear heat and moisture transfer in wood
Artikel i vetenskaplig tidskrift, 2006

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.


John Eriksson

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Sigurdur Ormarsson

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

H. Petersson

Vaxjo universitet

Numerical Heat Transfer Part A: Applications

1040-7782 (ISSN)

Vol. 50 9 851-864





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