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Evolution of a Planar Wake in Adverse Pressure Gradient (2016)

Driver, David M. ; Mateer, George G.

In: CASI

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Publication Date: 2019-07-12

Description: In the interest of improving the predictability of high-lift systems at maximum lift conditions, a series of fundamental experiments were conducted to study the effects of adverse pressure gradient on a wake flow. Mean and fluctuating velocities were measured with a two-component laser-Doppler velocimeter. Data were obtained for several cases of adverse pressure gradient, producing flows ranging from no reversed flow to massively reversed flow. While the turbulent Reynolds stresses increase with increasing size of the reversed flow region, the gradient of Reynolds stress does not. Computations using various turbulence models were unable to reproduce the reversed flow.

Keywords: Aerodynamics

Type: NASA/TM-2016-219068 , ARC-E-DAA-TN29325

Format: application/pdf

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