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Shear-free turbulent boundary layers. Part 2. New concepts for Reynolds stress transport equation modelling of inhomogeneous flows

Published online by Cambridge University Press:  26 April 2006

Blair Perot  and
Parviz Moin
Blair Perot
Affiliation:
Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA Currently at Los Alamos National Laboratory, NM 87545, USA.
Parviz Moin
Affiliation:
Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA Also with NASA-Ames Research Center, Moffet Field, CA 94035, USA.
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Abstract

Models for the dissipation tensor and (slow) pressure–strain terms of the Reynolds stress transport equations are presented which are applicable near boundaries. These models take into account the large inhomogeneity and anisotropy that can be present near walls and surfaces, and are inspired by the physical insights developed in Part 1 of this paper. The dissipation tensor model represents a fundamentally new approach to dealing with turbulence inhomogeneities. The pressure–strain model shows how the classic return-to-isotropy model of Lumley (1978) can be adapted to the near-wall region. The closure hypotheses underlying these two models are tested in an a priori fashion using direct numerical simulation (DNS) data.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 295 , 25 July 1995 , pp. 229 - 245
Copyright
© 1995 Cambridge University Press

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