Author(s): B. S. Pani; Kamal Abbas Mohamed Ali
Linked Author(s):
Keywords: Shear flows; Wall jets; Flow entrainment; Wall shear; Jet trajectory
Abstract: The mean flow characteristics of wall jets in cross-flowing streams have been investigated experimentally for flow emanating from different shapes of outlets held normal to the main stream. The effects of the velocity ratio and the shape of the outlet on the trajectory of the jet, maximum velocity decay, growth of the shear layer thickness and the mass flux have been investigated. The entrainment coefficient resulting from the component of the cross-flow normal to the jet trajectory is very significant, specifically in the zone of maximum deflection. The wall shear stress coefficient downstream of the efflux section has been presented in a unified form. Jets warmer than the cross-stream were also tested to find the temperature field and the decay of the maximum temperature-excess along the jet trajectory.
Year: 2005