J. KIMS Technol Search

CLOSE


Journal of the Korea Institute of Military Science and Technology 2001;4(2):215-224.
Investigation of Vortex Interactions over a Delta Wing with the Leading Edge Extension
, ,
1
2
연장된 앞전을 갖는 델타형 날개에서의 와류 상호작용에 관한 연구
이기영, 손명환, 장영일
1공군사관학교 기계공학과
2공군사관학교 항공우주공학과
Abstract
An experimental investigation was conducted on the interaction of vortices over a delta wing with the leading edge extension for three angles of attack($16^{circ},; 24^{circ} ;and; 28^{circ}$) at Reynolds number of $1.76{ imes}10^6.$ The experimental data included total pressure contours and velocity vectors using 5-hole probe measurements. Constant total pressure coefficient contours show the LEX vortex moves downward and outboard, while the wing vortex exhibited an inboard and upward migration. At near the trailing edge, these vortices reveal a direct interaction between the wing and LEX vortex, featuring a coiling of vortex cores about each other. The combined effect of the interaction of these two vortices and proximity to the wing surface results in the increase of the suction peak. This is in contrast to the result obtained on the delta wing alone configuration, where the effect of the vortex breakdown was manifested. The interaction of the wing and LEX vortices is more pronounced at higher AOA.
Key Words: Leading Edge Extension, Delta Wing, 5-Hole Probe, Vortex Interaction, Vortex Breackdown, Total Pressure Contours, Angle of Attack


ABOUT
ARTICLE CATEGORY

Browse all articles >

BROWSE ARTICLES
FOR CONTRIBUTORS
Editorial Office
160 Bugyuseong-daero 488beon-gil, Yuseong-gu, Daejeon 34060, Korea
Tel: +82-42-823-4603    Fax: +82-42-823-4605    E-mail: kimst@kimst.or.kr                

Copyright © 2024 by The Korea Institute of Military Science and Technology.

Developed in M2PI

Close layer
prev next