ABSTRACT
Suitable means of control and integration of lift production with a propulsive mechanism for marine vehicles are important in hydronautics, and in many non-aeronautical applications, such as for performance enhancement of road vehicles, and so forth. Various aeronautical conferences, forums, and workshops, such as those organized in 1986 and 2004 on circulation control by the National Aeronautics and Space Administration of the USA, are further testament to those efforts. The reinforces again why the Coanda effect with its ability to prolong flow attachment has attracted so much attention in aeronautics. The flow over the jet flap is a demonstration of the Coanda effect. Experimental and theoretical investigations into the pattern created by two-dimensional plane jets flowing along the contour of a circular cylinder have been carried out by Gersten. A concave curvature may be another cause of a wall jet to contract and produce flow non-uniformity.
