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- W2012148865 abstract "The wind computational fluid dynamics code was used to perform a series of analyses on a single-flow plug nozzle with chevrons. Air was injected from tubes tangent to the nozzle outer surface at three different points along the chevron at the nozzle exit: near the chevron notch, at the chevron mid-point, and near the chevron tip. Three injection pressures were used for each injection tube location--10, 30, and 50 psig-giving injection mass flow rates of 0.1, 0.2, and 0.3 percent of the nozzle mass flow. The results showed subtle changes in the jet plume s turbulence and vorticity structure in the region immediately downstream of the nozzle exit. Distinctive patterns in the plume structure emerged from each injection location, and these became more pronounced as the injection pressure was increased. However, no significant changes in centerline velocity decay or turbulent kinetic energy were observed in the jet plume as a result of flow injection. Furthermore, computational acoustics calculations performed with the JeNo code showed no real reduction in jet noise relative to the baseline chevron nozzle." @default.
- W2012148865 created "2016-06-24" @default.
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- W2012148865 date "2008-01-07" @default.
- W2012148865 modified "2023-09-27" @default.
- W2012148865 title "CFD Analyses and Jet-Noise Predictions of Chevron Nozzles with Vortex Stabilization" @default.
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- W2012148865 doi "https://doi.org/10.2514/6.2008-37" @default.
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