The width of the slot is of the order of the boundary layer on the infinite wall and the jet, in this case, mixes with a stream moving with constant velocity. This flow has drawn considerable basic and applied interest in the past few years for it has the characteristics of both a boundary layer and a free mixing flownThe similarity solution approach to boundary value problems in fluid mechanics has been useful. This approach has been effectively used by Glauert (1956) for the solution of the wall-jet in a still medium. Based on physical reasoning he was the first to postulate that, in a strict sense, the entire flow of the wall-jet cannot conform to one overall similarity solution.
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