National Aeronautics and Space Administration (NASA) Flow-Field Surveys for Rectangular Nozzles - internet üzerinden indir

Flow-Field Surveys for Rectangular Nozzles

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Flow field survey results for three rectangular nozzles are presented for a low subsonic condition obtained primarily by hot-wire anemometry. The three nozzles have aspect ratios of 2:1, 4:1 and 8:1. A fourth case included has 2:1 aspect ratio with chevrons added to the long edges. Data on mean velocity, turbulent normal and shear stresses as well as streamwise vorticity are presented covering a streamwise distance up to six equivalent diameters from the nozzle exit. These detailed flow properties, including initial boundary layer characteristics, are usually difficult to measure in high speed flows and the primary objective of the study is to aid ongoing and future computational and noise modeling efforts. Zaman, K. B. M. Q. Glenn Research Center NASA/TM-2012-217410, AIAA Paper 2012-0069, E-18082 WBS 984754.02.07.03.17.04 SHEAR STRESS; VELOCITY MEASUREMENT; FLOW CHARACTERISTICS; ASPECT RATIO; JET NOZZLES; TURBULENCE; FLOW DISTRIBUTION; EDGES; VORTICITY

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