Journal ArticleDOI
Investigation of wall-function approximations and subgrid-scale models in large eddy simulation of separated flow in a channel with streamwise periodic constrictions
TLDR
In this paper, large eddy simulations are presented for the flow in a periodic channel segment, which is laterally constricted by hill-shaped obstructions on one wall, having a height of 33% of the unconstricted channel.About:
This article is published in International Journal of Heat and Fluid Flow.The article was published on 2003-04-01. It has received 230 citations till now. The article focuses on the topics: Open-channel flow & Pipe flow.read more
Citations
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Journal ArticleDOI
Hybrid LES/RANS methods for the simulation of turbulent flows
TL;DR: A coherent review of the various approaches proposed in the recent literature on hybrid LES/RANS approaches is presented to provide information on how to distinguish different methods and their ingredients and to further the understanding of inherent limitations and difficulties.
Journal ArticleDOI
Inlet conditions for large eddy simulation: A review
Gavin Tabor,M.H. Baba-Ahmadi +1 more
TL;DR: In this paper, the authors present a review of methods for computing inlet conditions for LES, including pre-cursor simulation and synthesis, and implement their own novel versions of these using the code OpenFOAM.
Journal ArticleDOI
Highly resolved large-eddy simulation of separated flow in a channel with streamwise periodic constrictions
TL;DR: In this article, a large-eddy simulation is used to investigate the mean and turbulence properties of a separated flow in a channel constricted by periodically distributed hill-shaped protrusions on one wall.
Journal ArticleDOI
Flow over periodic hills – Numerical and experimental study in a wide range of Reynolds numbers
TL;DR: In this article, a detailed analysis of the flow over smoothly contoured constrictions in a plane channel is presented, which is a generic case of a flow separating from a curved surface with well-defined flow conditions.
Journal ArticleDOI
Filter-based unsteady RANS computations
TL;DR: Conditional averaging is adopted for the Navier–Stokes equation, and one more parameter, based on the filter size, is introduced into the k−e model, and the filter-based model is shown to improve the predictive capability considerably.
References
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Journal ArticleDOI
General circulation experiments with the primitive equations
TL;DR: In this article, an extended period numerical integration of a baroclinic primitive equation model has been made for the simulation and the study of the dynamics of the atmosphere's general circulation, and the solution corresponding to external gravitational propagation is filtered by requiring the vertically integrated divergence to vanish identically.
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The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
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A dynamic subgrid‐scale eddy viscosity model
TL;DR: In this article, a new eddy viscosity model is presented which alleviates many of the drawbacks of the existing subgrid-scale stress models, such as the inability to represent correctly with a single universal constant different turbulent fields in rotating or sheared flows, near solid walls, or in transitional regimes.
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Numerical Study of the Turbulent Flow Past an Airfoil with Trailing Edge Separation
C. M. Rhie,W. L. Chow +1 more
TL;DR: In this paper, a methode numerique par volume fini pour the resolution des equations de Navier-Stokes bidimensionnelles, incompressible, and stationnaires, en coordonnees generales curvilignes, is presented.
Journal ArticleDOI
A proposed modification of the Germano subgrid‐scale closure method
TL;DR: In this paper, the subgrid-scale closure method developed by Germano et al. is modified by use of a least squares technique to minimize the difference between the closure assumption and the resolved stresses.