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PASSIVE CONTROL OF BOUNDARY LAYER TRANSITION AND SEPARATION
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SYSNO ASEP 0353304 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title PASSIVE CONTROL OF BOUNDARY LAYER TRANSITION AND SEPARATION 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 International Conference Experimental Fluid Mechanics 2010, Conference Proceedings Volume 2, 1. - Liberec : Technical University of Liberec, 2010 / Vít T. ; Dančová P. - ISBN 978-80-7372-670-6 Pages s. 534-544 Number of pages 11 s. Publication form CD ROM - CD ROM Action International Conference Experimental Fluid Mechanics 2010 Event date 24.11.2010-26.11.2010 VEvent location Liberec Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords passive flow control ; airfoils and wings ; CFD and experiment synthesis Subject RIV JU - Aeronautics, Aerodynamics, Aircrafts R&D Projects 1M06031 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) IAA200760614 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA103/09/0977 GA ČR - Czech Science Foundation (CSF) 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. 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. 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 2011
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