TY - GEN
T1 - Comparison of fluidic oscillators and steady jets for separation control on a wall-mounted hump
AU - Otto, Christopher
AU - Tewes, Philipp
AU - Little, Jesse C.
AU - Woszidlo, Rene
N1 - Funding Information:
This work has been supported by The Boeing Company. The authors would like to acknowledge Miranda Ouellette, Arth Pande, and Colin Figgins for their continuous effort throughout the project. Special thanks go to the Department of Aerospace and Mechanical Engineering Machine Shop (Dale Drew, Lane Hammond, and Joseph Hartley) for their ongoing support and immediate help whenever needed.
Publisher Copyright:
© 2018 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
PY - 2018
Y1 - 2018
N2 - An experimental study was conducted to compare performance and efficiency between fluidic oscillators and steady jets with respect to numerous well established flow control coefficients (e.g., momentum, mass flow, energy, etc.) in support of the development of active flow control technology. Different actuation modules were tested on an existing model of the NASA hump geometry. Time-averaged pressure measurements were conducted with high spatial resolution along both the chord and span of the model. Stereoscopic Particle Image Velocimetry is performed downstream of the actuation location to investigate the performance differences in more detail. Fluidic oscillators are superior to steady jets with respect to any flow control coefficient at a given spacing. This superiority is due to the existence of more coherent streamwise vortices for fluidic oscillators in comparison to steady jets.
AB - An experimental study was conducted to compare performance and efficiency between fluidic oscillators and steady jets with respect to numerous well established flow control coefficients (e.g., momentum, mass flow, energy, etc.) in support of the development of active flow control technology. Different actuation modules were tested on an existing model of the NASA hump geometry. Time-averaged pressure measurements were conducted with high spatial resolution along both the chord and span of the model. Stereoscopic Particle Image Velocimetry is performed downstream of the actuation location to investigate the performance differences in more detail. Fluidic oscillators are superior to steady jets with respect to any flow control coefficient at a given spacing. This superiority is due to the existence of more coherent streamwise vortices for fluidic oscillators in comparison to steady jets.
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U2 - 10.2514/6.2018-1281
DO - 10.2514/6.2018-1281
M3 - Conference contribution
AN - SCOPUS:85044474086
SN - 9781624105241
T3 - AIAA Aerospace Sciences Meeting, 2018
BT - AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Aerospace Sciences Meeting, 2018
Y2 - 8 January 2018 through 12 January 2018
ER -