Abstract
Experimental data on atomization and trajectories of a water jet injected into a subsonic crossflow air under elevated pressure and temperature are provided. Correlations are obtained for the windward and centerline spray trajectories in terms of the principal variables, such as crossflow and liquid jet velocities and gas and liquid physical properties, as well as a function of pertinent nondimensional numbers (i.e., liquid to crossflow air momentum ratio and the channel and liquid jet Reynolds numbers). In addition, the effect of the process parameters on the shape and the streamwise area of the spray plume and spray penetration height is studied. In particular, the effect of liquid jet and crossflow air velocity on the penetration height and spray area is studied in detail. It is noted that, at a given pressure, temperature, and crossflow air velocity, there is an optimum liquid jet velocity that corresponds to a maximum spray area and an optimum atomization process.
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