NDLI: Three-phased wake vortex decay

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Three-phased wake vortex decay

Content Provider	NASA Technical Reports Server (NTRS)
Author	Ahmad, Nashat N. Switzer, George S. Proctor, Fred H. LimonDuparcmeur, Fanny M.
Copyright Year	2010
Description	A detailed parametric study is conducted that examines vortex decay within turbulent and stratified atmospheres. The study uses a large eddy simulation model to simulate the out-of-ground effect behavior of wake vortices due to their interaction with atmospheric turbulence and thermal stratification. This paper presents results from a parametric investigation and suggests improvements for existing fast-time wake prediction models. This paper also describes a three-phased decay for wake vortices. The third phase is characterized by a relatively slow rate of circulation decay, and is associated with the ringvortex stage that occurs following vortex linking. The three-phased decay is most prevalent for wakes imbedded within environments having low-turbulence and near-neutral stratification.
File Size	691669
Page Count	12
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20100030583
Archival Resource Key	ark:/13960/t2m66gz4j
Language	English
Publisher Date	2010-08-02
Access Restriction	Open
Subject Keyword	Aerodynamics Turbulence Large Eddy Simulation Atmospheric Turbulence Vortices Wakes Ground Effect Aerodynamics Stratification Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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