Heat and Mass Transfer Characteristics of Nanofluids in a Rotating System: A Convective Boundary Layer Flow

摘要

Introduction: Convective heat and mass transfer in nanofluids is a topic of major contemporaryinterest in both science and technology. In view of this, an unsteady MHD free convective flow ofnanofluids through a porous medium bound by a moving vertical semi-infinite permeable flat plate witha constant heat source and convective boundary condition in a rotating frame of reference is studiedtheoretically.Experimental: The novelty is the consideration of constant heat source and convective boundary conditionin a rotating frame. The velocity along the plate i.e., slip velocity is assumed to oscillate in timewith constant frequency so that the solutions of the boundary layer are of the same oscillatory type. Thedimensionless governing equations for this investigation are solved analytically using small perturbationapproximation. Two types of nanofluids, namely Cu-water and Al2O3-water are used.Results: The effects of various parameters on the flow, heat and mass transfer characteristics are discussedthrough graphs and tables.Conclusion: An increase in the convective parameter and nanoparticle volume fraction leads to increasethe thermal boundary layer thickness but opposite effect occurs for heat generation.