Heat Transfer Study of Two-Dimensional Laminar Incompressible Wall Jet over Backward-Facing Step

A steady-state heat transfer study is carried out for a two-dimensional, laminar, incompressible, plane wall jet over a backward-facing step. An unsteady stream function–vorticity formulation is used to solve the governing equations. The heat transfer characteristics of the jet as functions of Reynolds number (Re), Prandtl number (Pr), and step geometry (step length l and step height s) are reported in detail. Results are presented in the form of isotherm, Nusselt number, and average Nusselt number. In some cases, the computed results are compared with the results when the step length is zero.