Fig. 18From: Noise control for high subsonic jet flows by inner wall treatmentPower spectrum density of sound pressure at four observers: a P1 (\(x/{D}_{j}={0.5}\), \(y/{D}_{j}={1.08}\), \(z/{D}_{j}={0}\)); b P2 (6, 1.82, 0); c P3 (10, 2.37, 0); d P4 (20, 3.91, 0)Back to article page