28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-2.4.3

INFLUENCE OF TURBULENCE SCALE AND SHAPE OF LEADING EDGE ON FST-INDUCED LAMINAR-TURBULENT TRANSITION

M. V. Ustinov, A. A. Uspensky
TsAGI, Russian Federation

Keywords: laminar-turbulent transition, boundary layer

Receptivity theory describing generation of boundary layer disturbances by free-stream turbulence accounting for final radius of leading edge was developed. Basic findings of this theory – enhanced receptivity of blunt-nosed-plate boundary layer and final amplification coefficient of perturbations in sharp-nosed-plate boundary layer – were verified experimentally.

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