Determination of mass diffusion coefficients in Norway spruce using an anisotropic, concentration-dependent model

Article type: Research Article

Authors: Torres, Jose L.

Affiliations: Department of Engineering Science and Physics, College of Staten Island – City University of New York, 2800 Victory Boulevard, Staten Island, NY 10314, USA. E-mail: jtorres@mail.csi.cuny.edu

Abstract: The measurement of diffusion coefficients in an orthotropic medium under conditions of concentration dependence is fraught with experimental complications. The author is developing an alternative measurement procedure, based on an inverse problem formulation. This paper discusses an evaluation of the computational program intended to process experimental measurements. Orthotropy and concentration dependence in the medium are incorporated in the model by the use of a Finite Elements, nested inside a non-linear optimization algorithm. An evaluation of results of test cases would indicate that the proposed methodology is viable.

Keywords: Mass transfer, finite element, non-linear optimization, inverse problems

DOI: 10.3233/JCM-2009-0257

Journal: Journal of Computational Methods in Sciences and Engineering, vol. 9, no. 3, pp. 133-140, 2009