NDLI: Toward modeling wingtip vortices

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Toward modeling wingtip vortices

Content Provider	NASA Technical Reports Server (NTRS)
Author	Zeman, O.
Copyright Year	1993
Description	Wingtip vortices are generated by lifting airfoils; their salient features are compactness and relatively slow rate of decay. The principal motivation for studying the far field evolution of wingtip vortices is the need to understand and predict the extent of the vortex influence during aircraft take-off or landing. On submarines a wingtip vortex ingested into a propeller can be a source of undesirable noise. The main objectives of this research are (1) to establish theoretical understanding of the principal mechanisms that govern the later (diffusive) stages of a turbulent vortex, (2) to develop a turbulence closure model representing the basic physical mechanisms that control the vortex diffusive stage, and further (3) to investigate coupling between the near and far field evolutions; in other words, to study the effect of initial conditions on the vortex lifetime and the ultimate state.
File Size	518833
Page Count	10
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940019669
Archival Resource Key	ark:/13960/t1jh8gc6v
Language	English
Publisher Date	1993-12-01
Access Restriction	Open
Subject Keyword	Aerodynamics Reynolds Stress Turbulent Flow Turbulence Models Vortices Far Fields Closure Law Near Fields Vortex Generators Airfoils Wing Tips Mathematical Models Cylindrical Coordinates Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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