Fig. 7From: Noise control for high subsonic jet flows by inner wall treatmentPower spectra of velocity magnitude at two positions in the jet shear-layer: a P1 with \({x}/{D}_{j}=1.0\), \({r}/{D}_{j}=0.5\); b P1 with \({x}/{D}_{j}=5.0\), \({r}/{D}_{j}=0.5\)Back to article page