Experimental and computational studies were performed to investigate the effects of an incident shockwave on the flowfield and fuel distribution within a cavity flameholder. Shadowgraphy was used to characterized the flowfield in around a cavity and planar laser-induced fluorescence of the NO molecule was used to characterize fuel injection from a port upstream of the cavity. These experimental data were compared against CFD solutions of the Reynolds Averaged Navier-Stokes equations. The effect of the incident shock on the cavity shear layer controls fuel distribution within the cavity. The shock-on-jet impingement location pushes the shear layer deeper into the cavity and results in a higher concentration of fuel in the cavity. Shock-on-cavity impingement lifts the shear layer above the cavity and stretches the fuel plume in the spanwise direction. Increasing fuel injection momentum ratio does not strongly affect the flowfield in the presence of shocks.
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