FLOW AND HEAT-TRANSFER CONTROL OVER AN EXTERNAL SURFACE USING A POROUS BLOCK ARRAY ARRANGEMENT

In this study, a composite system made of multiple porous block struct ure used for flow and heat transfer control will be analyzed. The prim ary objective of this study is to analyze the changes in the flow patt ern and heat transfer characteristics due to the existence of the mult iple porous block structure. A general flow model that accounts for th e effects of the impermeable boundary and inertial effects is used to describe the flow inside the porous region. Solutions of the problem h ave been carried out using a finite-difference method through the use, of a stream function-vorticity transformation. Various interesting cha racteristics of the flow and temperature fields in the composite layer are analyzed and discussed in detail. The effects of several governin g dimensionless parameters, such as the Darcy number, Reynolds number, Prandtl number, the inertia parameter, as well as the effects of pert inent geometric parameters, are thoroughly explored.