Analytical and numerical study of drying of tomato in non-shrinkage and shrinkage model

In this paper the transport of heat and moisture during drying of tomato is studied by considering its viscoelastic properties. The phenomenon is described by a set of three coupled partial differential equations that take into account heat transfer, diffusion of moisture and stress driven diffusion. The stability behavior of the model in non-shrinkage case is studied. In order to solve numerically the model we consider finite difference method, IMEX(implicit-explicit) method. Numerical simulations for comparison of shrinkage and non-shrinkage models, show an influence of parameters in qualitative agreement with the expected physical behavior. (C) 2019 International Association for Mathematics and Computers in Simulation (IMACS). Published by Elsevier B.V. All rights reserved.