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Group analysis, DNS and modeling of a turbulent channel flow with streamwise rotation

Oberlack, Martin and Cabot, W. and Rogers, M. M. :
Group analysis, DNS and modeling of a turbulent channel flow with streamwise rotation.
In: Center for Turbulence Research, Proceedings of the Summer Program 1998. Studying Turbulence Using Numerical Simulation Databases (VII). Stanford University/NASA Ames , pp. 221-241.
[Book Section] , (1998)

Abstract

The turbulent channel flow with streamwise rotation has been investigated by means of several different analytical, numerical, and modeling approaches. Lie group analysis of the two-point correlation equations led to linear scaling laws for the streamwise mean velocity. In addition it was found that a cross flow in spanwise direction is induced, which may also exhibit a linear region. By further analysis of the two-point correlation equation, it is shown that all six components of the Reynolds stress tensor are non-zero. In addition certain symmetries and skewsymmetries about the centerline have been established for all flow quantities. All the latter findings of the analysis have been very well verified by means of direct numerical calculations. The flow has also been tackled by LES and second-moment closure models. The dynamic LES captured most of the theoretical and DNS findings quantitatively. The second-moment closure model was able to capture most of the basic trends, but any quantitative agreement could not be achieved.

Item Type: Book Section
Erschienen: 1998
Creators: Oberlack, Martin and Cabot, W. and Rogers, M. M.
Title: Group analysis, DNS and modeling of a turbulent channel flow with streamwise rotation
Language: English
Abstract:

The turbulent channel flow with streamwise rotation has been investigated by means of several different analytical, numerical, and modeling approaches. Lie group analysis of the two-point correlation equations led to linear scaling laws for the streamwise mean velocity. In addition it was found that a cross flow in spanwise direction is induced, which may also exhibit a linear region. By further analysis of the two-point correlation equation, it is shown that all six components of the Reynolds stress tensor are non-zero. In addition certain symmetries and skewsymmetries about the centerline have been established for all flow quantities. All the latter findings of the analysis have been very well verified by means of direct numerical calculations. The flow has also been tackled by LES and second-moment closure models. The dynamic LES captured most of the theoretical and DNS findings quantitatively. The second-moment closure model was able to capture most of the basic trends, but any quantitative agreement could not be achieved.

Title of Book: Center for Turbulence Research, Proceedings of the Summer Program 1998
Series Name: Studying Turbulence Using Numerical Simulation Databases
Number: VII
Publisher: Stanford University/NASA Ames
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Fluid Dynamics (fdy)
Event Title: Proceedings of the 1998 Summer Program
Date Deposited: 30 Aug 2011 14:34
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