EFFECT OF LEADING-EDGE FLAPS ON VORTICES AND VORTEX BREAKDOWN

Authors
DENG Q GURSUL I
Citation
Q. Deng et I. Gursul, EFFECT OF LEADING-EDGE FLAPS ON VORTICES AND VORTEX BREAKDOWN, Journal of aircraft, 33(6), 1996, pp. 1079-1086
Citations number
21
Categorie Soggetti
Aerospace Engineering & Tecnology
Journal title
Journal of aircraft → ACNP
ISSN journal
00218669
Volume
33
Issue
6
Year of publication
1996
Pages
1079 - 1086
Database
ISI
SICI code
0021-8669(1996)33:6<1079:EOLFOV>2.0.ZU;2-R
Abstract
The effects of leading-edge naps on leading-edge vortices and vortex b reakdown were investigated. Vortex breakdown location and its sensitiv ity strongly depend on angle of attack and flap angle. The presence of naps alters the structure of the leading-edge vortices. Separation of the shear layer from the nap and reattachment to the flap are possibl e depending on nap angle and angle of attack. Variations of swirl velo city and swirl angle as a function of flap angle are discussed.