Introduction of Wall Effects into Explicit Algebraic Stress Models Through Elliptic Blending

  • Abdou G. Oceni
  • Rémi Manceau
  • Thomas B. Gatski
Part of the ERCOFTAC Series book series (ERCO, volume 14)


In order to account for the non-local blocking effect of the wall, responsible for the two-component limit of turbulence, in explicit algebraic models, the elliptic blending strategy, a simplification of the elliptic relaxation strategy, is used. The introduction of additional terms, dependent on a tensor built on a pseudo-wall-normal vector, yields an extension of the integrity basis used to derive the analytical solution of the algebraic equation. In order to obtain a tractable model, the extended integrity basis must be truncated, even in 2D plane flows, contrary to standard explicit algebraic models. Four different explicit algebraic Reynolds-stress models are presented, derived using different choices for the truncated basis. They all inherit from their underlying Reynolds-stress model, the Elliptic Blending Model, a correct reproduction of the blocking effect of the wall and, consequently, of the two-component limit of turbulence. The models are satisfactorily validated in plane Poiseuille flows and several configurations of Couette–Poiseuille flows.


Reynolds Stress Poiseuille Flow Reynolds Stress Model Integrity Basis Galerkin Projection 
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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Abdou G. Oceni
    • 1
  • Rémi Manceau
    • 1
  • Thomas B. Gatski
    • 1
  1. 1.Laboratoire d’études aérodynamiques (LEA)Université de Poitiers, ENSMA, CNRSFuturoscope Chasseneuil CedexFrance

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