A NOTE ON A WALL JET NEGOTIATING A TRAILING EDGE

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Abstract
The nonlinear adjustment of an incompressible wall jet encountering a (symmetrical) trailing edge is considered. Most of the adjustment is described by a double-deck structure in which the majority of the wall jet is simply displaced, promoting both a transverse and a streamwise pressure gradient, the latter being proportional to the local streamline curvature. Closer to the wall and trailing streamline, the flow problem is nonlinear, viscous and of the free interaction kind. The solution is found numerically by use of certain trial solutions, the properties of which are also analysed. Two important applications of this local structure are to the three- dimensional flow near the rim of a rotating disc and to the planar flow near the upper edge of a heated vertical flat plate.

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