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Length scale analysis in wall-bounded turbulent flow by means of Dissipation Elements

Aldudak, Fettah and Oberlack, Martin (2011):
Length scale analysis in wall-bounded turbulent flow by means of Dissipation Elements.
In: Journal of Physics: Conference Series, Institute of Physics, pp. 022001/1-022001/6, 318, (2), ISSN 1742-6588,
[Online-Edition: http://stacks.iop.org/1742-6596/318/i=2/a=022001],
[Article]

Abstract

The Dissipation Element ( DE ) method is used to analyse the geometric structure of turbulent pattern for several scalar fields in a turbulent plane channel flow obtained by Direct Numerical Simulations ( DNS ) of the Navier-Stokes equations. We show that both the probability density function ( pdf ) and the number of DE exhibit a clear scaling behavior as a function of the wall. Further, a remarkable insensitivity of the pdf is observed with respect to the Reynolds number and the choice of the scalar.

Item Type: Article
Erschienen: 2011
Creators: Aldudak, Fettah and Oberlack, Martin
Title: Length scale analysis in wall-bounded turbulent flow by means of Dissipation Elements
Language: English
Abstract:

The Dissipation Element ( DE ) method is used to analyse the geometric structure of turbulent pattern for several scalar fields in a turbulent plane channel flow obtained by Direct Numerical Simulations ( DNS ) of the Navier-Stokes equations. We show that both the probability density function ( pdf ) and the number of DE exhibit a clear scaling behavior as a function of the wall. Further, a remarkable insensitivity of the pdf is observed with respect to the Reynolds number and the choice of the scalar.

Journal or Publication Title: Journal of Physics: Conference Series
Volume: 318
Number: 2
Publisher: Institute of Physics
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Fluid Dynamics (fdy)
Exzellenzinitiative
Exzellenzinitiative > Clusters of Excellence
Zentrale Einrichtungen
Exzellenzinitiative > Clusters of Excellence > Center of Smart Interfaces (CSI)
Date Deposited: 06 Jan 2012 07:22
Official URL: http://stacks.iop.org/1742-6596/318/i=2/a=022001
Additional Information:

13th European Turbulence Conference (ETC13), Warsaw, Poland, 5th - 8th September, 2011

Identification Number: doi:10.1088/1742-6596/318/2/022001
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