Finite-element analysis of coupled nonlinear heat and moisture transfer in wood
Journal article, 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, Applied Mechanics, Material and Computational Mechanics

Sigurdur Ormarsson

Chalmers, Applied Mechanics, Material and Computational Mechanics

H. Petersson

Vaxjo universitet

Numerical Heat Transfer Part A: Applications

1040-7782 (ISSN)

Vol. 50 9 851-864

Subject Categories

Materials Engineering



More information