27th Congress of International Council of the Aeronautical Sciences, 19 - 24 September 2010, Nice, France
Paper ICAS 2010-3.9.4

BOUNDARY LAYER TRANSITION, SEPARATION AND FLOW CONTROL ON AIRFOILS AND BODIES IN CFD, WIND-TUNNEL AND IN-FLIGHT STUDIES

L. Popelka, D. Simurda, M. Matejka*, N. Souckova
Academy of Sciences of the Czech Republic, Czech Republic; *Czech Technical University in Prague, Czech Republic

Keywords: flow control, transition and turbulence, wind tunnel and flight testing

PIV, smoke-wire, tuft and oil-flow visualization were used for wind-tunnel investigation, merged with in-flight testing and CFD analysis. Boundary layer separation - stall and separation bubbles was studied on airfoils and wing-fuselage geometry. Separation suppression by flow control was reached and drag coefficient reduction of test sailplanes measured in flight.

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