A dynamic mathematical model,
based on physical and transport properties and
mass and energy balances, was developed for the
simulation of unsteady convective drying of
agricultural products (fruits and vegetables) in
static bed conditions. The local materialaveraged
drying rate and the heat flux depend on
local air humidity and temperature, as well as
local mass and heat transfer coefficients in
interaction with the moisture and temperature
distribution inside the material. The model
utilizes water sorption isotherm equations and
the change in solid density due to the shrinkage
phenomenon. The aim of this article is to
describe the modelling and simulation of the
dehydration of grapes in a complex drying
system processes, using COMSOL Multiphysics
Program.