Influence of a reverse delta-type add-on device on wake vortex alleviation

Altaf, Alamaan and Thong, Tanboon and Omar, Ashraf Ali and Asrar, Waqar (2016) Influence of a reverse delta-type add-on device on wake vortex alleviation. AIAA Journal, 54 (2). pp. 625-636. ISSN 0001-1452 E-ISSN 1533-385X

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Abstract

Particle image velocimetry was used in a low-speed wind tunnel to investigate the effect of interactions of vortices produced by a wingtip of a half-span wing (NACA 23012 in landing configuration) and a slender reverse delta-type add-on device placed near the tip on the upper surface of the half-span wing. This work investigates the characteristics of the vortex interactions generated downstream in planes perpendicular to the freestream direction and their dependence on angles of attack at a chord-based Reynolds number of Rec = 2.75 × 105. It was found that the add-on device significantly reduced the tangential velocity, vorticity, and circulation magnitude by up to 82.9, 92.6, and 42.8%, respectively, and increased the resultant vortex core radius by a factor of 6.57.Asix-component force balance was used to obtain the aerodynamic performance of the half-span wing model with a reverse delta-type add-on device. It was found that the reverse delta-type add-on device marginally affected the aerodynamic performance of the halfspan high-lift configuration wing model.

Item Type:	Article (Journal)
Additional Information:	4277/53914
Uncontrolled Keywords:	Engineering controlled terms,Delta,Vortex,Engineering main heading,Vortex flow
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TT Handicrafts Arts and crafts
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Prof. Waqar Asrar
Date Deposited:	13 Apr 2017 17:28
Last Modified:	13 Apr 2017 17:28
URI:	http://irep.iium.edu.my/id/eprint/53914

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