24th Congress of International Council of the Aeronautical Sciences, 29 August-3, September 2004, Yokohama, Japan
Paper ICAS 2004-6.11.2

INVESTIGATION OF TRANSITION MODELLING FOR AEROFOIL DYNAMIC STALL

J. L. Hill, S. T. Shaw, N. Qin*
Department of Aerospace Sciences, School of Engineering, Cranfield University, Cranfield, UK; *Department of Mechanical Engineering, Sheffield University, Sheffield, UK

Keywords: transition, low Reynolds number, ptiching, airfoil

A method for computing low Reynolds number flows containing laminar-turbulent transition is described. The model employs empirical relationships to describe the onset and extent of transition and is coupled with a two equation turbulence model. Results are presented for two aerofoil configurations that demonstrate the ability of the model to compute attached transitional flows and flows involving leading edge separation. The model is used to investigate transitional flows on aerofoils performing unsteady pitching motion.

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