Počet záznamů: 1
Boundary Layer Transition, Separation and Flow Control on Airfoils, Wings and Bodies in CFD, Wind-Tunnel and In-Flight Studies
0367420 - UT-L 2012 RIV NL eng J - Článek v odborném periodiku
Popelka, Lukáš - Matějka, M. - Šimurda, David - Součková, Natálie
Boundary Layer Transition, Separation and Flow Control on Airfoils, Wings and Bodies in CFD, Wind-Tunnel and In-Flight Studies.
Technical Soaring. Roč. 35, č. 4 (2011), s. 97-104 ISSN 0744-8996
Grant CEP: GA MŠk(CZ) 1M06031; GA AV ČR IAA2076403; GA ČR GA101/08/1112
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: airfoil * wing-fuselage interaction * flow control
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. The combination of experimental results with those of numerical modeling greatly facilitated the understanding of the various phenomena. The effects of several passive flow control devices, vortex generators, counter-rotating vortex generators, and zig-zag type turbulators were considered. 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/11104/0202118