Development of wall models for LES of separated flows using statistical evaluations

Breuer, M.; Kniazev, Boris; Abel, Markus

doi:10.1016/j.compfluid.2006.09.001

Cited by 30 publications

(10 citation statements)

References 48 publications

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“…Moreover, formulas have been proposed to take into account the pressure gradient and roughness effects in the power-law model. 50,51 Breuer et al 52 proposed an extended version of the wall model of Werner and Wengle, 43 taking into account the effect of the streamwise pressure gradient for LES calculations. Additional improvements were also proposed using the artificial eddy viscosity concept and a new definition of the relative thickness of the viscous sublayer.…”

Section: A Velocity Profile In a Turbulent Boundary Layermentioning

confidence: 99%

An explicit power-law-based wall model for lattice Boltzmann method–Reynolds-averaged numerical simulations of the flow around airfoils

2018

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In this paper, an explicit wall model based on a power-law velocity profile is proposed for the simulation of the incompressible flow around airfoils at high Reynolds numbers. This wall model is particularly suited for the wall treatment involved in Cartesian grids. Moreover, it does not require an iterative procedure for the friction velocity determination. The validation of this power-law wall model is assessed for Reynolds-averaged Navier-Stokes simulations of the flow around a two-dimensional airfoil using the lattice Boltzmann approach along with the Spalart-Allmaras turbulence model. Good results are obtained for the prediction of the aerodynamic coefficients and the pressure profiles at two Reynolds numbers and several angles of attack. The explicit power-law is thus well suited for a simplified near-wall treatment at high Reynolds numbers using Cartesian grids.

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Section: A Velocity Profile In a Turbulent Boundary Layermentioning

confidence: 99%

An explicit power-law-based wall model for lattice Boltzmann method–Reynolds-averaged numerical simulations of the flow around airfoils

2018

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“…One example is the work of Breuer et al [2] who use the subgrid-scale viscosity to apply the information given by the logarithmic law (Eq. 20) into a solver.…”

Section: Alternative Implementation Methods In Literaturementioning

confidence: 99%

“…The goal is to take more physical phenomena into account, such as heat fluxes [6] or chemical reactions [3] to name some examples. This includes efforts to extend the validity of the wall-model to configurations including streamwise pressure gradients, wallcurvature or separated flows [2,8], in which standard equilibrium formulations can be expected to perform poorly.…”

Section: Introductionmentioning

confidence: 99%

Implementation Methods of Wall Functions in Cell-vertex Numerical Solvers

Jaegle

Cabrit

Mendez

et al. 2010

Flow Turbulence Combust

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Two different implementation techniques of wall functions for cell-vertex based numerical methods are described and evaluated. The underlying wall model is based on the classical theory of the turbulent boundary layer. The present work focuses on the integration of this wall-model in a cell-vertex solver for large eddy simulations and its implications when applied to complex geometries, in particular domains with sudden expansions (more generally in presence of sharp edges). At corner nodes, the conjugation of law of the wall models using slip velocities on walls and of the cell-vertex approach leads to difficulties. Therefore, an alternative F. Jaegle · O. Cabrit · S. Mendez CERFACS, 42 Av. Gaspard Coriolis, 246 Flow Turbulence Combust (2010) 85:245-272implementation of wall functions is introduced, which uses a no-slip condition at the wall. Both implementation methods are compared in a turbulent periodic channel flow, representing a typical validation case. The case of an injector for aero-engines is presented as an example for an industrial-scale application with a complex geometry.

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“…(Diurno 2001; Bose & Park 2018). Meanwhile, some enhanced wall-function models, which take into account the streamwise pressure gradient, have been developed to simulate flow over periodic hills (Breuer, Kniazev & Abel 2007; Manhart, Peller & Brun 2008; Duprat et al 2011), but the free parameters in these models restrict their application in general. Second, most wall modelling strategies including detached eddy simulations (DES) fall into the hybrid RANS/LES methodology in complex geometries, which solves the RANS equations in the inner layer and provides wall shear stress boundary conditions for the outer LES region (Cabot & Moin 1999; Piomelli & Balaras 2002; Kawai & Asada 2013; Park & Moin 2016).…”

Section: Introductionmentioning

confidence: 99%

Large-eddy simulations of turbulent flow in a channel with streamwise periodic constrictions

2020

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Development of wall models for LES of separated flows using statistical evaluations

Cited by 30 publications

References 48 publications

An explicit power-law-based wall model for lattice Boltzmann method–Reynolds-averaged numerical simulations of the flow around airfoils

An explicit power-law-based wall model for lattice Boltzmann method–Reynolds-averaged numerical simulations of the flow around airfoils

Implementation Methods of Wall Functions in Cell-vertex Numerical Solvers

Large-eddy simulations of turbulent flow in a channel with streamwise periodic constrictions

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