Original title: Visualization of Flow Separation and Control by Vortex Generators on an Single Flap in Landing Configuration
Authors: Součková, Natálie ; Kuklová, J. ; Popelka, Lukáš ; Matějka, Milan
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2010, Liberec (CZ), 2010-11-24 / 2010-11-26
Year: 2010
Language: eng
Abstract: This paper focuses on a suppression of the flow separation, which occurs on a deflected flap, by means of vortex generators (VG's). An airfoil NACA 63A421 with a simple flap and vane-type vortex generators were used. The investigation was carried out by using experimental and numerical methods. The data from the numerical simulation of the flapped airfoil without VG's control were used for the vortex generator design. Two sizes, two different shapes and various spacing of the vortex generators were tested. The flow past the airfoil was visualized through three methods, namely tuft filaments technique, oil and thermo camera visualization. The experiments were performed in closed circuit wind tunnels with closed and open test sections. The lift curves for both cases without and with vortex generators were acquired for a lift coefficient improvement determination. The improvement was achieved for several cases by means all of the applied methods.
Keywords: flow separation; visualization; vortex generators
Project no.: CEZ:AV0Z20760514 (CEP), 1M06031 (CEP), GAP101/10/1230 (CEP), GA101/08/1112 (CEP), GA103/09/0977 (CEP)
Funding provider: GA MŠk, GA ČR, GA ČR, GA ČR
Host item entry: Proceedings of the 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/11104/0191224

Permalink: http://www.nusl.cz/ntk/nusl-42131


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