Abstract
Three-dimensional numerical study of convective drying process was investigated for two porous moist blocks in a channel under turbulent flow conditions by considering different parameters which are effective on heat and moisture transfer phenomena. The 3D unsteady flow and heat and mass transfer equations were solved with Galerkin weighted residual finite element method. Drying objects were rectangular shaped porous objects and effects of size and distance between the objects, velocity and temperature of inlet drying air were investigated with varying values. Transport of heat and moisture for the problem was evaluated. Obtained results showed that all of the changing parameters had significant effects on flow properties, heat and mass transfer phenomena in 3D. As the interspacing between the blocks increases, it has a positive impact on the drying process especially for second porous block even though it is not as effective as the velocity or the size. As the height of the porous block increases, due to the blockage effect it has adverse effects on the transportation phenomena.
•3D heat transfer and mass transfer from moist porous objects were analyzed.•As the interspacing increases, it has a positive impact on the drying process.•The height of the obstacles has adverse effects on heat and mass transfer.•The inlet velocity and temperature have positive impacts on drying for objects.