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 andremaining 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 thatboth Rayleigh number and buoyancy ratio play dominant role on entropy generation and heat and masstransfer as well as fluid flow. A special case occurred between -1.5 £ N £ -1 and complex structure is observed

کلیدواژه ها:

Entropy Generation ، Double Diffusion ، Natural Convection ، Energy ، Three Dimensional