Simulation of Heat Transfer From Hot-Air Jets Impinging a Three-Dimensional Concave Surface

Abstract

a, b = coefficients d = piccolo-hole (jet) diameter e = eccentricity of a conical curve H = nozzle-to-surface distance h = heat-transfer coefficient k = thermal conductivity M = Mach number Nu = Nusselt number based on the hole diameter, hd=k n = empirical coefficient p = focal point of a conical curve _ q = heat flux Rejet = Reynolds number based on jet diameter and mean jet velocity, ud= s = coordinate along the surface with its origin aft of the center of the jet axis, y 0 plane T = temperature, K u = velocity along the jet axis u = mean jet velocity W = nozzle-to-nozzle distance x, y, z = coordinate system with its origin aft of the center of the jet exit = dynamic viscosity = kinematic viscosity, = = orientation angle of the jet = fluid density