Characteristics of Hollow Cone Sprays in Crossflow

While a significant amount of research has concentrated on single-phase gas jets in crossflow or on the bending and subsequent breakup of a continuous liquid jet in crossflow, much less has been reported on the behavior of a hollow cone spray in crossflow. Our work focuses on identifying the key mean field characteristics of this less- studied configuration and in linking them to the underlying physical factors. We employ computations based on the conventional Lagrangian-Eulerian point parcel treatment of the spray. Our characterization involves changes in the topological structure of the spray in the near field and in the quasi-equilibration with the cross flowing stream in the farfield.



In the nearfield of a spray in crossflow, two regimes namely, weak crossflow and strong crossflow, can be identified based on the interaction between the spray and the mean flow. The figure shows the differences between these two regimes and the influence on the overall topology of the spray.



Cross-sectional view of the sprays as governed by key parameters involving the cross flowing gas velocity and the droplet size.

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