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Large-Eddy Simulations and Lidar Measurements of Vortex-Pair Breakup in Aircraft WakesResults of large-eddy simulations of an aircraft wake are compared with results from ground-based lidar measurements made at NASA Langley Research Center during the Subsonic Assessment Near-Field Interaction Flight Experiment field tests. Brief reviews of the design of the field test for obtaining the evolution of wake dispersion behind a Boeing 737 and of the model developed for simulating such wakes are given. Both the measurements and the simulations concentrate on the period from a few seconds to a few minutes after the wake is generated, during which the essentially two-dimensional vortex pair is broken up into a variety of three-dimensional eddies. The model and experiment show similar distinctive breakup eddies induced by the mutual interactions of the vortices, after perturbation by the atmospheric motions.
Document ID
19990080968
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Authors
Lewellen, D. C.
(West Virginia Univ. Morgantown, WV United States)
Lewellen, W. S.
(West Virginia Univ. Morgantown, WV United States)
Poole, L. R.
(NASA Langley Research Center Hampton, VA United States)
DeCoursey, R. J.
(Science Applications International Corp. Hampton, VA United States)
Hansen, G. M.
(Science and Technology Corp. Hampton, VA United States)
Hostetler, C. A.
(NASA Langley Research Center Hampton, VA United States)
Kent, G. S.
(Science and Technology Corp. Hampton, VA United States)
Date Acquired
August 19, 2013
Publication Date
August 1, 1998
Publication Information
Publication: AIAA Journal
Volume: 36
Issue: 8
Subject Category
Aerodynamics
Funding Number(s)
CONTRACT_GRANT: NAG1-1635
Distribution Limits
Public
Copyright
Other

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