Reliability of One Dimensional Model of Moisture Diffusion in Wood

Article type: Research Article

Authors: Baronas, Romas^; | Ivanauskas, Feliksas^; | Sapagovas, Mifodijus

Affiliations: Faculty of Mathematics and Informatics, Vilnius University, Naugarduko 24, 2006 Vilnius, Lithuania | Institute of Mathematics and Informatics, Akademijos 4, 2021 Vilnius, Lithuania. E-mail: [email protected], [email protected], [email protected]

Note: [] This research was partially supported by Lithuanian State Science and Studies Foundation Grant No. T-576.

Abstract: A model of the moisture diffusion in wood under isothermal conditions taking into consideration coating of the surface of a specimen is presented in a 2-D-in-space formulation. A reliability of a corresponding 1-D model is investigated for a simulation of moisture movement in 2-D medium. This paper presents a technique to determine the width as well as the degree of edges coating of the specimen making the 1-D model relevant for 2-D medium. This technique bases on the computer simulation of 2-D moisture diffusion to estimate the reliability of the corresponding 1-D model. In the technique, approximate coefficients of the diffusion and surface emission may be employed if accurate values of these coefficients are unknown.

Keywords: wood drying, diffusion, surface emission, modelling, simulation

DOI: 10.3233/INF-2002-13403

Journal: Informatica, vol. 13, no. 4, pp. 405-416, 2002