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An explicit algebraic Reynolds stress model for incompressible and compressible turbulent flows
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0002-2711-4687
2000 (English)In: Journal of Fluid Mechanics, ISSN 0022-1120, E-ISSN 1469-7645, Vol. 403, 89-132 p.Article in journal (Refereed) Published
Abstract [en]

Some new developments of explicit algebraic Reynolds stress turbulence models (EARSM) are presented. The new developments include a new near-wall treatment ensuring realizability for the individual stress components, a formulation for compressible flows, and a suggestion for a possible approximation of diffusion terms in the anisotropy transport equation. Recent developments in this area are assessed and collected into a model for both incompressible and compressible three-dimensional wall-bounded turbulent flows. This model represents a solution of the implicit ARSM equations, where the production to dissipation ratio is obtained as a solution to a nonlinear algebraic relation. Three-dimensionality is fully accounted for in the mean flow description of the stress anisotropy. The resulting EARSM has been found to be well suited to integration to the wall and all individual Reynolds stresses can be well predicted by introducing wall damping functions derived from the van Driest damping function. The platform for the model consists of the transport equations for the kinetic energy and an auxiliary quantity. The proposed model can be used with any such platform, and examples are shown for two different choices of the auxiliary quantity.

Place, publisher, year, edition, pages
Cambridge University Press, 2000. Vol. 403, 89-132 p.
Keyword [en]
compressible flow, mathematical modeling, near-wall flow, Reynolds stress, turbulent flow
National Category
Fluid Mechanics and Acoustics
Research subject
Engineering Mechanics
URN: urn:nbn:se:kth:diva-157486DOI: 10.1017/S0022112099007004ISI: 000085399100005ScopusID: 2-s2.0-0033922211OAI: diva2:770145

QC 20150225

Available from: 2014-12-09 Created: 2014-12-09 Last updated: 2015-02-25Bibliographically approved

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