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A low-Reynolds-number one-equation model of turbulence

Published online by Cambridge University Press:  03 February 2016

M. Elkhoury
M. Elkhoury*
Affiliation:
Department of Mechanical Engineering, Lebanese American University, Lebanon
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Abstract

This work proposes an improved form of Menter’s single-equation eddy viscosity transport model. The new transport equation follows from the transformation of the k-ε closure that includes the Yap-correction term, which is known to improve the (k-ε) model’s prediction in adverse pressure gradient flows. The damping functions of the (low-Reynolds-number) LRN model are constructed using the ingenious approach of Baldwin and Barth. Hence, the model provides the correct wall-limiting behaviour of turbulence. Furthermore, the destruction term is modified to better account for non-equilibrium anisotropy effects. An assessment of the present proposed model against experiments, as well as Menter and Spalart-Allmaras (SA) turbulence models is provided via several boundary layer computations. Good agreement with experimental data is indicated, which merits the model to be considered for further refinement.

Type
Research Article
Information
The Aeronautical Journal , Volume 112 , Issue 1128 , February 2008 , pp. 101 - 108
Copyright
Copyright © Royal Aeronautical Society 2008 

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