Exploring jet-plate interaction effects on screech generation

Abstract This paper investigates the effects of the interaction between an under-expanded supersonic jet and a flat plate on screech generation. The plate is installed parallel to the jet axis and an experimental investigation is made for several configurations corresponding to different radial distances of the plate, H , from the nozzle axis. Acoustic measurements are carried out to evaluate the plate impact on jet aeroacoustics. The results show that, when the radial distance is less than 1.5