Abstract
Experimental results from exploring the flowfield and noise generated by turbulent, high subsonic, single-stream jets are presented. We study the nature and directly measure the distribution of subsonic jet noise sources and attempt to establish their connection to some of its turbulence characteristics. Detailed measurements of the jet turbulence characteristics and of the spatial distribution of noise sources (using a linear phased array) are performed for an Mj = 0.6, Re D ≅10 6 isothermal jet. Noise source distributions are investigated for a wide range of jet Mach numbers (0.5 ≤ Mj ≤ 0.9) with and without heating (T j =80, 1000°F). The turbulence and source distribution measurements provide a unique experimental database for high subsonic turbulent jets with which to validate aeroacoustic prediction models
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