Abstract The present work is an experimental wind tunnel study of the velocity field associated with a single turbulent jet or plume issuing through a circular nozzle flush with the ground plane and into a normal crossflow. The velocity data have been obtained by using a five-hole pressure probe which was operated in the nulled mode. From the flow vectors the vorticity distributions, the circulation associated with one of the dominant contrarotating vortices and the vortex doublet strength for the interaction have been determined. The data have been compared with both experimental and numerical turbulence model data from other workers. It was found that the development of the deflected jet was significantly dependent upon the initial boundary conditions in the flow field, in particular the jet boundary layer profile at the nozzle exit and the approach flow boundary layer along the ground plane.
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