Unsteady aerodynamics of flap cove flow in a high-lift device configuration
Unsteady aerodynamics of flap cove flow in a high-lift device configuration
The unsteady flow around the flap cove region of a three-element high lift aerofoil configuration has
been experimentally investigated using Particle Image Velocimetry (PIV) and Laser Doppler
Anenometry (LDA). Measurements were carried out in the University of Southampton 3.5m x 2.5m and
2.1m x 1.7m wind tunnels on the two-dimensional National High Lift Programme (NHLP) model in
typical landing configuration. The flow inside the flap cove resembles that of a leading-edge slat A
strong shear layer separates from the cove lip and rolls-up downstream into a series of large, coherent
vortices. These impinge on the main element surface and are seen to strike the leading edge of the flap.
The effect of the flap gap stabilising the flow is seen in Reynolds stress and turbulent kinetic energy
profiles within the flap cove. The wake of the main element trailing edge resembles a mixing layer, with
little evidence of vortex shedding.
Takeda, K.
e699e097-4ba9-42bd-8298-a2199e71d061
Zhang, X.
3056a795-80f7-4bbd-9c75-ecbc93085421
Ashcroft, G.B.
c2491f3b-7aa6-41b8-9b71-ff254e1d2f2e
Nelson, P.A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
2001
Takeda, K.
e699e097-4ba9-42bd-8298-a2199e71d061
Zhang, X.
3056a795-80f7-4bbd-9c75-ecbc93085421
Ashcroft, G.B.
c2491f3b-7aa6-41b8-9b71-ff254e1d2f2e
Nelson, P.A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
Takeda, K., Zhang, X., Ashcroft, G.B. and Nelson, P.A.
(2001)
Unsteady aerodynamics of flap cove flow in a high-lift device configuration.
39th Aerospace Sciences Meeting and Exhibition, Reno, USA.
08 - 11 Jan 2001.
10 pp
.
Record type:
Conference or Workshop Item
(Other)
Abstract
The unsteady flow around the flap cove region of a three-element high lift aerofoil configuration has
been experimentally investigated using Particle Image Velocimetry (PIV) and Laser Doppler
Anenometry (LDA). Measurements were carried out in the University of Southampton 3.5m x 2.5m and
2.1m x 1.7m wind tunnels on the two-dimensional National High Lift Programme (NHLP) model in
typical landing configuration. The flow inside the flap cove resembles that of a leading-edge slat A
strong shear layer separates from the cove lip and rolls-up downstream into a series of large, coherent
vortices. These impinge on the main element surface and are seen to strike the leading edge of the flap.
The effect of the flap gap stabilising the flow is seen in Reynolds stress and turbulent kinetic energy
profiles within the flap cove. The wake of the main element trailing edge resembles a mixing layer, with
little evidence of vortex shedding.
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More information
Published date: 2001
Additional Information:
AIAA-2001-706
Venue - Dates:
39th Aerospace Sciences Meeting and Exhibition, Reno, USA, 2001-01-08 - 2001-01-11
Identifiers
Local EPrints ID: 22174
URI: http://eprints.soton.ac.uk/id/eprint/22174
PURE UUID: a0b51cd0-f0ab-4126-94d7-2730c4473f90
Catalogue record
Date deposited: 26 Feb 2007
Last modified: 18 Mar 2022 02:32
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Contributors
Author:
K. Takeda
Author:
X. Zhang
Author:
G.B. Ashcroft
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