MHD Effect on Mixed Convection Heat Transfer of Cu-Water Nanofluid in a Vented Parallelogrammic Cavity with Injection or Suction.

In this work MHD effect on mixed convection heat transfer of nanofluid in a vented parallelogrammic cavity with injection or suction is studied numerically using Cu-water nanofluid as working fluid. Galerkin weighted residual finite element method is used to solve the two dimensional problem. The bottom wall is subjected to be linearly heated temperature and top wall is cold temperature, while the other boundaries are considered thermally insulated. The pure water is admitted from the left vertical wall in bottom portion by injection or by the suction imposed on the opening of the right vertical wall. A set of graphical results are presented in terms of streamlines, isotherms, dimensionless temperature, velocity profiles and average Nusselt numbers to investigate the effect of Hartmann number, Reynolds number, Grashof number and Richardson number on the fluid flow and heat transfer characteristics inside the enclosure. The results demonstrate that heat transfer rate increases as increasing Richardson number. It is observed that Hartmann number is a good control parameter for heat transfer in fluid flow through parallelogrammic enclosure. Moreover, Cu-water nanofluid has significant effect to be used for enhancing the heat transfer rate. To validate the computational procedure present result compared with other published works. [ABSTRACT FROM AUTHOR]