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Characteristics of asymmetric turbulent near wakes

Nakayama, A.(1) and Kreplin, H.-P. (1994) Characteristics of asymmetric turbulent near wakes. Physics of Fluids, 7, pp. 2430-2439. American Institute of Physics, USA.

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Abstract

The mean-velicity and turbulence quantities in a few qualitatively different types of asymmetric two-dimensional turbulent near wakes in nearly zero-pressure gradient have been experimentally studied. In all cases, the log-law similarity of the boundary layers was found to continue into the initial part of the wake same similarity variables as in the boundary layers on the same side, provided the origin of the normal distance is taken at the smooth extension of the respective surfaces. The Reynolds stress profiles show sharp peaks just downstream of the trailing, edge, and the magnitudes of the peaks are found to be related to the values of the surface friction at the trailing edge. These peaks grow into the full width of the wake to form the far wake profiles. In this process, the turbulent diffusions of the Reynolds stresses are very important and when the size- asymmetry is severe, is not clearly of gradient-transport type.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1994,
Title:Characteristics of asymmetric turbulent near wakes
Authors:
AuthorsInstitution or Email of Authors
Nakayama, A.(1)UNSPECIFIED
Kreplin, H.-P.UNSPECIFIED
Date:1994
Journal or Publication Title:Physics of Fluids
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:7
Page Range:pp. 2430-2439
Publisher:American Institute of Physics, USA
Series Name:6
Status:Published
Keywords:turbulent wakes, asymmetric wakes, Reynolds stresses, turbulence modelling
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L TG - Querschnittstechnologien
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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