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Boundary Layer Transition, Separation and Flow Control on Airfoils, Wings and Bodies in CFD, Wind-Tunnel and In-Flight Studies
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SYSNO ASEP 0367420 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Boundary Layer Transition, Separation and Flow Control on Airfoils, Wings and Bodies in CFD, Wind-Tunnel and In-Flight Studies Author(s) Popelka, Lukáš (UT-L)
Matějka, M. (CZ)
Šimurda, David (UT-L) RID, ORCID
Součková, Natálie (UT-L)Number of authors 4 Source Title Technical Soaring - ISSN 0744-8996
Roč. 35, č. 4 (2011), s. 97-104Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords airfoil ; wing-fuselage interaction ; flow control Subject RIV BK - Fluid Dynamics R&D Projects 1M06031 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) IAA2076403 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA101/08/1112 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation 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. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2012
Number of the records: 1