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On the physics and kinematics of vortex motion in the downstream of a high aspect ratio wing with high-lift devices

Das, A. and Wichmann, G. (2004) On the physics and kinematics of vortex motion in the downstream of a high aspect ratio wing with high-lift devices. Aerospace Science and Technology, 8 (6), pp. 489-498.

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Abstract

Vortical flows, source flows and spiraling flows are very common phenomena in fluid dynamics, as are frequently observed in the field of aerodynamics or atmospheric disturbances. In the present study some analysis is taken up at first on the details of the flow quantities in the core region of the vortical flows, it being the essential part of the vortex, while the surrounding outer region, as accompanying field, retains its usual potential flow character. In case of lifting wings vortex formation at the wing- and flap-edges is a common feature. When high aspect ratio wings with high-lift devices in the landing phase are concerned, they give rise to strong multiple vortices. It is observed that the wing-tip vortex spirals around the stronger flap-edge vortex, with continual decrease of the radial distance between them. Hence, it is essential to analyze the physics and kinematics of such vortex motion. Both experimental field data and numerical solutions of such flows are available to compare with the theoretical findings. Based on the causalities of the vortex motion one can work out measures to attenuate such flows downstream of the wing.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2005,
Title:On the physics and kinematics of vortex motion in the downstream of a high aspect ratio wing with high-lift devices
Authors:
AuthorsInstitution or Email of Authors
Das, A.UNSPECIFIED
Wichmann, G.UNSPECIFIED
Date:2004
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:8
Page Range:pp. 489-498
Status:Published
Keywords:Vortical flows, Vortex cores, Wing wake, Spiraling vortices, High-lift wings
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:17 Mar 2009
Last Modified:14 Jan 2010 19:41

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