Počet záznamů: 1

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

  1. 1.
    0348374 - UT-L 2011 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
    Popelka, Lukáš - Šimurda, David - Matějka, M. - Součková, Natálie
    BOUNDARY LAYER TRANSITION, SEPARATION AND FLOW CONTROL ON AIRFOILS AND BODIES IN CFD, WIND-TUNNEL AND IN-FLIGHT STUDIES.
    ICAS 2010 : 27th INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES. Edinburg: Otimage Ltd., 2010 - (Grant, I.), s. 1-9. ISBN 978-0-9565333-0-2.
    [ICAS 2010 /27./. Nice (FR), 19.09.2010-24.09.2010]
    Grant CEP: GA MŠk(CZ) 1M06031; GA AV ČR IAA2076403; GA ČR GA101/08/1112
    Výzkumný záměr: CEZ:AV0Z20760514
    Klíčová slova: flow control * transition and turbulence * wind tunnel
    Kód oboru RIV: BK - Mechanika tekutin

    Particle Image Velocimetry, smoke-wire, tuft filaments and oil-flow visualization techniques were used for wind-tunnel and in-flight investigation of boundary layer separation, both stall and separation bubbles, related to the low-Reynolds number transition mechanism. Airfoils of three Czech-designed sailplanes and their wing-fuselage interaction were subject to study. Wind-tunnel experiments, in-flight test cases on sailplanes were used, and synthesis with CFD data gained. Effect of passive flow control devices - vortex generators - was surveyed, counter-rotating vortex generators and Zig-zag type turbulators were applied. Separation suppression was reached and consequent drag coefficient reduction of test aircrafts measured in flight. Investigation was further extended by PIV Time-Resolved technique.
    Trvalý link: http://hdl.handle.net/11104/0188924