Fluid Flow And Heuat Transfer Analysis Of Laminar Multiple Square Jets Impinging On A Flat Plate

摘要

A computational study is reported on fluid flow and heat transfer from multiple laminar square jets impinging on a flat surface. The parameter which are varied in this study includes fluid Reynolds number (Re=100,300,500), jet to jet spacing (4D,5D,6D) and nozzle exit to plate distance (AZ) .The commercially available finite volume code Fluent 6.3.26 is used to solve the flow field and heat transfer characteristics. The computationally obtained flow structure reveals the complex interaction of wall jets. Primary peaks are obtained at the stagnation point and secondary peaks are observed at the interaction of the wall jets. Flow structure is strongly affected by the jet -to-plate spacing. A strong correlation between the Nusselt number and pressure distribution is noticed. On the other hand the magnitude of local Nusselt number at the stagnation point is not affected by Jet-to-Jet spacing