Fig. 17From: Noise control for high subsonic jet flows by inner wall treatmentFlow and sound near-field visualized by density gradient (greyscale) and vorticity. The color scales range up to the level of 8\({U}_{j}/{D}_{j}\) for vorticity, and from -10 to 10 for density gradient: a Baseline; b Case 1; c Case 2Back to article page