Application of Elliptic Equations for the Study of Asymptotic Distributions of Temperature and Moisture Content During Drying by Electromagnetic Radiation

Abstract

Abstract A new approach is proposed to study the processes of heat and moisture propagation during drying by electromagnetic radiation. It consists in the fact that transient processes preceding the constant drying speed mode are excluded from the calculations. Thus, the initial boundary value problem for two related parabolic equations can be replaced by two independently solved boundary value problems for elliptic equations. On this basis, a numerical algorithm was developed to study the temperature and moisture content fields when drying samples of arbitrary shape. It can be used in all cases where transients are not of interest.