Abstract

In gas phase experiments we explore the effect of asymmetric and helical excitation of the flow about the exit plane of a jet injected perpendicularly into crossflow. Simultaneous acetone planar laser-induced fluorescence imaging and stereo particle image velocimetry quantify the effects of such excitation on jet structure, vorticity, and scalar mixing, while proper orthogonal decomposition of the images enables determination of characteristic dynamical signatures related to important jet features.

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