26th Congress of International Council of the Aeronautical Sciences
including the 8th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference
14 - 19 September 2008, Anchorage, Alaska, USA
Paper ICAS2008-P2.1 (AIAA 2008-8877)

AN EXPERIMENTAL AND COMPUTATIONAL STUDY OF LOW RE NUMBER TRANSITIONAL FLOWS OVER AN AEROFOIL WITH LEADING EDGE SLAT

M. Genc, G. Lock*, U. Kaynak**
Erciyes Univ., Turkey; *Univ. of Bath, UK; **TOBB Univ., Turkey

Keywords: OW RE NUMBER TRANSITIONAL FLOWS, LEADING EDGE SLAT

A multi-element airfoil including a NACA2415 airfoil with NACA22 leading edge slat is investigated at a transitional Reynolds number of 2 x 105. The single-element aerofoil without the slat experiences a laminar separation bubble in the experiment. The leading-edge slat significantly delays the stall and eliminates the separation bubble. Numerical simulations using the transport equation based transition models are shown to accurately predict the lift curve including the stall, and the elimination of the separation bubble.

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