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Type: Conference paper
Title: Laminar separation bubble effect on the lift curve slope of an airfoil
Author: Hansen, K.
Kelso, R.
Choudhry, A.
Arjomandi, M.
Citation: Proceedings of the 19th Australasian Fluid Mechanics Conference, 2014, pp.1-4
Publisher: AFMC
Publisher Place: online
Issue Date: 2014
ISBN: 9780646596952
Conference Name: 19th Australasian Fluid Mechanics Conference (AFMC) (8 Dec 2014 - 11 Dec 2014 : Melbourne, Australia)
Statement of
Kristy Hansen, Richard Kelso, Aman Choudhury, Maziar Arjomandi
Abstract: This paper explores some unusual aerodynamic features that can arise due to the existence of laminar separation bubbles which occur at a transitional Reynolds number of 120,000 on two standard NACA airfoils of 21% thickness-to-chord ratio. These effects include an apparent increase in the lift-curve slope beyond the ideal lift slope (2p rad 1) at high angles of attack as well as a sudden stall characteristic. In addition, on one typical airfoil profile, it is demonstrated that negative lift can be generated at low angles of attack. In each case the laminar separation bubble is found to alter the curvature of the external flow, leading to an effective change in the camber of the foil.
Rights: Copyright status unknown
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Mechanical Engineering conference papers

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