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The Inviscid Motion of a Vortex Pair in a Compressible and Stratified Atmosphere

Stuff, R. (1996) The Inviscid Motion of a Vortex Pair in a Compressible and Stratified Atmosphere. In: AGARD-Meeting in Trontheim am 20.-23. Mai 1996.

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Abstract

The movement of an inviscid vortex pair in a compressible atmosphere including bouyancy effects is described by analytic solutions. The effects of compressibility are dealt with in an isentropic atmosphere. The work of compression done by the atmosphere onthe vortex is entirely consumed by the isentropic change of the thermodynamic state of the vortex pair. The acceleration of the accompanying and apparent mass is given by the displacement of the two vortices towards each other. The effects of bouyancy are investigated by means of a two-dimensional, incompressible, inviscid vortex pair which is heavier than the ambient fluid. It turns out that the condition of pressure continuity across the separating streamline can be achieved only by assuming an increase in circulation of the two vortices. The mass accompanying the vortex pair under the effect of non-conservative forces converts a fraction of its gravity potential into an increase of stagnation pressure.

Document Type:Conference or Workshop Item (Paper)
Additional Information: institution=AGARD, LIDO-Berichtsjahr=1996, pages=10,
Title:The Inviscid Motion of a Vortex Pair in a Compressible and Stratified Atmosphere
Authors:
AuthorsInstitution or Email of Authors
Stuff, R.UNSPECIFIED
Date:1996
Journal or Publication Title:AGARD-Meeting in Trontheim am 20.-23. Mai 1996
Status:Published
Keywords:Aircraft Wakes, Atmospherics Stratification, Airtrafic
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:08

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