Entropy Generation of Double Diffusive Natural Convection in A Three Dimensional Differentially Heated Enclosure

Entropy generation of double diffusive natural convection in a three dimensional differentially heated enclosure has been performed numerically. vertical walls of enclosure are heated differentially and remaining walls are adiabatic. the obtained results were presented via iso-concentration, iso-temperatures, velocity vector projection, particle trajectories, velocity profiles, iso-entropy, local nusselt and sherwood numbers, average nusselt and sherwood numbers and bejan numbers at different value of buoyancy ratio (-2 ? n ? 2) and rayleigh numbers (103 ? ra ? 105). the lewis number is fixed at le = 2. it is found that both rayleigh number and buoyancy ratio play dominant role on entropy generation and heat and mass transfer as well as fluid flow. a special case occurred between -1.5 ? n ? -1 and complex structure is observed.