TY - GEN
T1 - Energy deposition applied to a transverse jet in a supersonic crossflow
AU - Lazar, Eli
AU - Elliott, Gregory
AU - Glumac, Nick
PY - 2009
Y1 - 2009
N2 - An experimental investigation of a sonic underexpanded jet injected normally into a Mach 2.25 crossflow is reported. The jet exit geometry was circular and was operated at a jet-to-crossflow momentum flux ratio of 1.7. As a means of excitation to the flow field, an energy pulse from a Q-switched Nd:YAG laser was focused in the center of the jet exit, creating induced optical breakdown of air. The resulting flow field (as well as the unperturbed flow) was analyzed with schlieren photography and partcle image velocimetry. Analysis of phase averaged schlieren images suggested that the resulting blast wave from the laser pulse disrupted the structure of the barrel shock and Mach disk. The two-component velocity field data revealed that the excitation pulse also caused a perturbation to the jet shear layer which followed in the wake of the blast wave.
AB - An experimental investigation of a sonic underexpanded jet injected normally into a Mach 2.25 crossflow is reported. The jet exit geometry was circular and was operated at a jet-to-crossflow momentum flux ratio of 1.7. As a means of excitation to the flow field, an energy pulse from a Q-switched Nd:YAG laser was focused in the center of the jet exit, creating induced optical breakdown of air. The resulting flow field (as well as the unperturbed flow) was analyzed with schlieren photography and partcle image velocimetry. Analysis of phase averaged schlieren images suggested that the resulting blast wave from the laser pulse disrupted the structure of the barrel shock and Mach disk. The two-component velocity field data revealed that the excitation pulse also caused a perturbation to the jet shear layer which followed in the wake of the blast wave.
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M3 - Conference contribution
AN - SCOPUS:78549281763
SN - 9781563479694
T3 - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
BT - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
T2 - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
Y2 - 5 January 2009 through 8 January 2009
ER -