Regularization modeling for LES of separated boundary layer flow

Geurts, BJ Bernard

doi:10.1016/j.jfluidstructs.2008.08.006

Cited by 5 publications

(4 citation statements)

References 33 publications

(45 reference statements)

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“…It shows surprisingly good performance in most cases even for the separated boundary layer (Geurts [13]). …”

Section: Resultsmentioning

confidence: 99%

Note on the Use of Camassa–holm Equations for Simulation of Incompressible Fluid Turbulence

Caggio¹,

Bodnár²

2017

Topical Problems of Fluid Mechanics 2017

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The aim of this short communication is to briefly introduce the Camassa-Holm equations as a working model for simulation of incompressible fluid turbulence. In particular we discuss its application for turbulent boundary layer flows. This model (and related models) is studied for several years in mathematical community, starting from Leray [23]. It can be understood as a generalization of some classical fluid models (Navier-Stokes equations, Prandtl boundary layer equations), showing some interesting mathematical properties in the analysis of the behavior of it's solution (e.g. Layton and Lewandowski [22]). It has been found however, that the model predictions can lead to surprising extensions of the use of the model in technical applications, namely in simulating the turbulent fluid flows. This brief paper should be understood as an introductory note to this novel class of models for applied scientists. It gives the overview of the essential model formulations together with the relevant bibliographical summary.

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“…It shows surprisingly good performance in most cases even for the separated boundary layer (Geurts [13]). …”

Section: Resultsmentioning

confidence: 99%

Note on the Use of Camassa–holm Equations for Simulation of Incompressible Fluid Turbulence

Caggio¹,

Bodnár²

2017

Topical Problems of Fluid Mechanics 2017

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“…An improvement over our current approach consists of solving the boundary layer approximation of the Reynolds averaged Navier-Stokes (RANS) equations near the structure, preferably using a local frame of reference attached to the finite-element representation of the structure, and couple the resulting stresses to the LES outside the boundary layer. An alternative approach is to use a more sophisticated boundary layer closure (Geurts, 2008). This should improve the modeling of the flow around the rigid structure and possibly the flow around the flexible structure, if the technical challenges associated with incorporating the time-dependent nature of the surface are somehow resolved.…”

Section: Boundary Conditions and Couplingmentioning

confidence: 99%

A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane

Karagiozis

Kamakoti

Cirak

et al. 2011

Journal of Fluids and Structures

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“…It is interesting to note that nearly all of the regularization‐type LES approaches were originally designed for the stabilization of higher‐frequency (low‐energy content) modes arising from the nonlinear convective term . These approaches include the spectral vanishing viscosity approach by Tadmor, the hyper‐viscosity or the p Laplacian ( p >5/4) term ∇ p of Lions, and the modification of the Navier‐Stokes equations in other works .…”

Section: Introductionmentioning

confidence: 99%

“…[37][38][39] It is interesting to note that nearly all of the regularization-type LES approaches were originally designed for the stabilization of higher-frequency (low-energy content) modes arising from the nonlinear convective term. 26,39,40 These approaches include the spectral vanishing viscosity approach by Tadmor, 41 the hyper-viscosity or the p Laplacian (p > 5∕4) term ∇ p of Lions, 42 and the modification of the Navier-Stokes equations in other works. 30,[43][44][45] In SEM, an effective approach which can be used for stabilization of the Navier-Stokes equations, is by explicit filtering of the solution variables.…”

Section: Introductionmentioning

confidence: 99%

Regularization modelling for large‐eddy simulation in wall‐bounded turbulence: An explicit filtering‐based approach

Chatterjee

Peet

2018

Numerical Methods in Fluids

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Summary A comprehensive analysis of a filtering‐based regularization model for large‐eddy simulation has been carried out for fully developed turbulent channel flow, and its potency as a large‐eddy simulation candidate has been tested by comparison with eddy‐viscosity subgrid‐scale models. The exponentially accurate spectral element method, particularly open‐source code Nek5000, has been used for such computations. The simulations in the channel flow have been performed at moderately high bulk Reynolds number on the basis of half channel width, 20 000, and compared against the direct numerical simulation database for the mean flow profile, second‐order statistics, and their streamwise energy spectra. The results show that the filtering‐based regularization model is in reasonably good agreement with the subgrid‐scale models, and they also elucidate valuable insights on the filter‐based regularization.

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Regularization modeling for LES of separated boundary layer flow

Cited by 5 publications

References 33 publications

Note on the Use of Camassa–holm Equations for Simulation of Incompressible Fluid Turbulence

Note on the Use of Camassa–holm Equations for Simulation of Incompressible Fluid Turbulence

A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane

Regularization modelling for large‐eddy simulation in wall‐bounded turbulence: An explicit filtering‐based approach

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