Infrared Thermography as a Visualization Tool of Flow Control by Vortex Generators

0351444 - ÚT 2011 RIV CZ eng C - Conference Paper (international conference)
Součková, Natálie - Kuklová, J. - Popelka, Lukáš - Matějka, M.
Infrared Thermography as a Visualization Tool of Flow Control by Vortex Generators.
Colloquium Fluid Dynamics 2010: Proceedings. Prague: Institute of Thermomechanics AS CR, v. v. i., 2010 - (Jonáš, P.; Uruba, V.), s. 1-9. ISBN 978-80-87012-27-7.
[Colloquium Fluid Dynamics 2010. Praha (CZ), 20.10.2010-22.10.2010]
R&D Projects: GA MŠMT(CZ) 1M06031; GA ČR GAP101/10/1230; GA ČR GA101/08/1112; GA ČR GA103/09/0977
Institutional research plan: CEZ:AV0Z20760514
Keywords : infrared thermography visualization * vortex generators * flow control
Subject RIV: JU - Aeronautics, Aerodynamics, Aircrafts

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 two methods, namely oil and infrared thermography visualization. The lift curves for both cases without and with vortex generators were acquired for a lift coefficient improvement determination. . The experiments were performed in closed circuit wind tunnels with open and close test sections. The improvement was achieved for several cases by means all of the applied methods.
Permanent Link: http://hdl.handle.net/11104/0191198