Original title: PASSIVE CONTROL OF BOUNDARY LAYER TRANSITION AND SEPARATION
Authors: Popelka, Lukáš ; Matějka, M. ; Šimurda, David ; Součková, Natálie
Document type: Papers
Conference/Event: International Conference Experimental Fluid Mechanics 2010, Liberec (CZ), 2010-11-24 / 2010-11-26
Year: 2010
Language: eng
Abstract: 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. Experimental data were coupled with numerical modeling and synthesis 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.
Keywords: airfoils and wings; CFD and experiment synthesis; passive flow control
Project no.: CEZ:AV0Z20760514 (CEP), 1M06031 (CEP), IAA200760614 (CEP), GA103/09/0977 (CEP), GA101/08/1112 (CEP)
Funding provider: GA MŠk, GA AV ČR, GA ČR, GA ČR
Host item entry: International Conference Experimental Fluid Mechanics 2010, ISBN 978-80-7372-670-6

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0192587

Permalink: http://www.nusl.cz/ntk/nusl-42315


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