On the relation between subgrid-scale modeling and numerical discretization in large-eddy simulation

N. A. Adams, S. Hickel, T. Kempe, J. A. Domaradzki

Research output: Chapter in Book/Conference proceedings/Edited volumeChapterScientificpeer-review

2 Citations (Scopus)

Abstract

Subgrid-scale models in LES operate on a range of scales which is marginally resolved by the discrete approximation. Accordingly, the discrete approximation method and the subgrid-scale model are linked. One can exploit this link by developing discretization methods from subgrid-scale models, or vice versa. Approaches where SGS models and numerical discretizations are fully linked are called implicit SGS models. Different approaches to SGS modeling can be taken. Mostly, given nonlinearly stable discretizations schemes for the convective fluxes are used as main element of implicit SGS models. Recently we have proposed to design nonlinear discretization schemes in such a way that their truncation error functions as SGS model in regions where the flow is turbulent and as a second-order accurate discretization in regions where the flow is laminar. In this paper we review the current status on this so-called adaptive local deconvolution method (ALDM) and provide some application results.

Original languageEnglish
Title of host publicationComplex Effects in Large Eddy Simulations
EditorsStavros Kassinos, Carlos Langer, Gianluca Iaccarino, Parviz Moin
Pages15-27
Number of pages13
Publication statusPublished - 1 Dec 2007
Externally publishedYes

Publication series

NameLecture Notes in Computational Science and Engineering
Volume56
ISSN (Print)1439-7358

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