Hartmann-Sprenger(H-S)tube of exciting equipment was integrated into the traditional supersonic jet device to excite the large-scale structure in shear layer of the jet.The experimental investigation of this structure was performed by using schlieren imaging.It was shown by the analysis of transient and time-averaged schlieren images that the excited jet could enhance the mixing of jet with air increase the width of jet diffusion effectively,and there would be an obvious exciting effect on the jet at 2.2kHz...
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