Boundary Layer Transition, Separation and Flow Control on Airfoils, Wings and Bodies in Numerical, Wind-Tunnel and In-Flight Studies

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F11%3A00188924" target="_blank" >RIV/68407700:21220/11:00188924 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Boundary Layer Transition, Separation and Flow Control on Airfoils, Wings and Bodies in Numerical, Wind-Tunnel and In-Flight Studies
Original language description
Particle Image Velocimetry (PIV), smoke-wire, tuft filaments and oil-flow visualization techniques were used for wind-tunnel and in-flight investigations of boundary layer separation, both stall and separation bubbles, related to the low-Reynolds numbertransition mechanism. Airfoils of three Czech-designed sailplanes and their wing-fuselage interaction were studied. The combination of experimental results with those of numerical modeling (computational fluid dynamics, CFD) 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 corresponding drag coefficient reduction occurred for test aircraft measured in flight. Investigations were extended by the PIV time-resolved technique.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JU - Aeronautics, aerodynamics, aeroplanes
OECD FORD branch
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Project
<a href="/en/project/GA101%2F08%2F1112" target="_blank" >GA101/08/1112: Boundary layers separation control</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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