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Anisotropic eddy-viscosity concept for strongly detached unsteady flows

Bourguet, Rémi and Braza, Marianna and Perrin, Rodolphe and Harran, Gilles Anisotropic eddy-viscosity concept for strongly detached unsteady flows. (2007) AIAA Journal, 45 (5). 1145-1149. ISSN 0001-1452

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Official URL: http://dx.doi.org/10.2514/1.27916

Abstract

The accurate prediction of the flow physics around bodies at high Reynolds number is a challenge in aerodynamics nowadays. In the context of turbulent flow modeling, recent advances like large eddy simulation (LES) and hybrid methods [detached eddy simulation (DES)] have considerably improved the physical relevance of the numerical simulation. However, the LES approach is still limited to the low-Reynolds-number range concerning wall flows. The unsteady Reynolds-averaged Navier–Stokes (URANS) approach remains a widespread and robust methodology for complex flow computation, especially in the near-wall region. Complex statistical models like second-order closure schemes [differential Reynolds stress modeling (DRSM)] improve the prediction of these properties and can provide an efficient simulationofturbulent stresses. Fromacomputational pointofview, the main drawbacks of such approaches are a higher cost, especially in unsteady 3-D flows and above all, numerical instabilities.

Item Type:Article
Additional Information:Thanks to American Institute of Aeronautics and Astronautics editor. The original PDF of the article can be found at AIAA Journal website : http://arc.aiaa.org/loi/aiaaj
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Remi BOURGUET
Deposited On:15 Nov 2013 14:04

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