Conjugate mixed convection heat and mass transfer in brick drying

In this study, a numerical methodology for the solution of conjugate heat a nd mass transfer problem is presented. Fluid flow, heat and mass transfer o ver a rectangular brick due to transient laminar mixed convection has been numerically simulated. The coupled non-linear partial differential equation s, for both gas phase and solid are solved using finite element procedure. Flow is assumed to be incompressible, two-dimensional, laminar. Analysis ha s been carried out at a Reynolds number of 200 with Pr = 0.71. The effect o f buoyancy on the brick drying has been investigated Velocity vectors, stre amlines in the flow field and temperature and moisture contours and tempera ture distribution along the solid surface are presented. It is observed tha t there is considerable effect of buoyancy during drying. The results indic ate a nan-uniform drying of the brick with the leading edge drying faster t han the rest of the brick.