Lattice Boltzmann Simulation of Mixed Convection Heat Transfer of Water-Al2O3 Nanofluid in a Corrugated-Wall Cavity

In the present study, the effects of Al2O3 nanoparticles presence on mixed convection heat transfer in a liddriven cavity with a corrugated wall are investigated using the Lattice Boltzmann Method. The Boundary Fitting Method is used to simulate the curved boundaries in the LBM. The problem is investigated for different Richardson numbers (0.1-10), volume fractions of nanoparticles (0.01-0.05) and phase shifts of wavy wall (0-270) when the Reynolds number is equal to 25. Results show that adding nanoparticles to the base fluid enhances the rate of the mixed convection. It is found that the value heat transfer enhancement in low Richardson numbers is better than high Richardson numbers. The results also represent the effective role of corrugated wall on rate of nanofluid heat transfer

Keywords:

Lattice Boltzmann Method , Boundary Fitting Method , Nanofluid , Wavy Surface , Mixed Convection