Observations of hysteresis and broad flow features on a swept wing at high-lift

Venkatakrishnan, L and Sundaram, S and Viswanath, PR Observations of hysteresis and broad flow features on a swept wing at high-lift. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

Experiments have been performed at low speeds documenting certain broad aspects of hysteresis on a mildly swept wing under high-lift conditions. Aerodynamic load measurements were carried out at two values of incidence of 10.5o and 15.5o and flap deflections of 20o and 30o, essentially under quasi-steady conditions. Two-dimensional PIV was utilized to measure the mean velocity vector field in the rear part of the wing and flap. These velocity measurements have revealed certain complex nature of separated flows on the wing and flap. Also, in general, the slot flow angle determined by geometric considerations is very different from those actually inferred from PIV measurements.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: High-lift, Hysteresis, 2D-PIV
Subjects: AERONAUTICS > Aerodynamics
Depositing User: Smt Bhagya Rekha KA
Date Deposited: 29 Aug 2011 05:04
Last Modified: 29 Aug 2011 05:04
URI: http://nal-ir.nal.res.in/id/eprint/9933

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