EFFECT OF VORTEX GENERATORS ON FLOW CONDITIONS OF AIRFOIL WITH DEFLECTED FLAP

0351475 - ÚT 2011 RIV TW eng C - Conference Paper (international conference)
Součková, Natálie - Popelka, Lukáš - Matějka, M. - Šimurda, David
EFFECT OF VORTEX GENERATORS ON FLOW CONDITIONS OF AIRFOIL WITH DEFLECTED FLAP.
21st International Symposium on Transport Phenomena. Kaohsiung City: National Kaohsiung University of Applied Sciences, 2010, s. 16-24. ISBN 978-986-6184-25-3.
[International Symposium on Transport Phenomena /21./. Kaohsiung City (TW), 02.11.2010-05.11.2010]
R&D Projects: GA MŠMT(CZ) 1M06031; GA ČR GA101/08/1112; GA ČR GAP101/10/1230
Institutional research plan: CEZ:AV0Z20760514
Keywords : vortex generators * airfoil * flap
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 (VGs). 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 VGs 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 tuft filaments technique and oil visualization. The experiments were performed in closed circuit wind tunnels with closed and open test sections. The lift curves for both cases with and without vortex generators were acquired for the determination of the lift coefficient improvement. The improvement was achieved for several cases by means all of the applied methods.
Permanent Link: http://hdl.handle.net/11104/0006165