Computational Fluid Flow And Heat Transfer Analysis

摘要

Impinging jets have received considerable attention due to their inherent characteristics of high rates of heat transfer. Such impinging flow devices allow for short flow paths and relatively high rates of cooling from comparatively small surface area. Various industrial processes involving high heat transfer rates use impinging jets. Few industrial processes which employ impinging jets are drying of food products, textiles, films and papers, processing of some metals and glass, cooling of gas turbine blades and outer wall of the combustion chamber, cooling of electronic equipments etc. Heat transfer rates in case of impinging jets are influenced by various parameters like Reynolds number, jet to plate spacing, radial distance from stagnation point, prandtl number, target plate inclination, confinement of the jet, nozzle geometry, curvature of target plate, roughness of the target plate and turbulence intensity at the nozzle exit.