Transport in Porous Media, Vol.112, No.2, 519-540, 2016
Investigation on the Effect of Young's Modulus Variation on Drying-Induced Stresses
The aim of this study is to evaluate the effect of Young's modulus changes in different moistures on convective drying-induced stresses. A number of different geometries with axial symmetry were studied for both two- and three-dimensional cases of drying. The diffusion model was used for simulating the drying process. The system of mass, heat and momentum equations was solved numerically by the finite element method. Changes in physical properties such as mass transfer coefficient, shrinkage coefficient and density are considered in the simulation. Numerical results show that increasing the drying rate increases the maximum of drying-induced stresses. It was observed that the value of stresses in simulation with constant Young's modulus is higher than simulation with variable Young's modulus. Moreover, the changes of Young's modulus have no effect on the location of maximum stress; however, the time of occurring the maximum stress is delayed.