Numerical investigation of the heat transfer characteristics of propane/air flames impinging on a cylindrical surface

To better understand the complex phenomena occurring inside furnaces with direct flame impingement and extend existent studies to situations multiple enclosed jets, numerical simulations of a radial array four turbulent confined jets impinging on cylinder are presented. The three-dimensional, incompressible, steady, averaged equations for transport mass, momentum, energy species were solved. Turbulence was modeled realizable k-ε model, combustion finite-rate/eddy-dissipation model radiation finite-volume scheme. reference condition simulated is based operation an industrial furnace, but Reynolds number, excess air ratio, distance, cylindrical target diameter reactant temperature varied in order analyze their influence fluid flow heat transfer determine correlation area-averaged Nusselt number. curvature interaction adjacent opposed wall lead increase target. For parameter values considered, number primary importance enhance reduce power required, while secondary least influential distance.