A stochastic model for large eddy simulation of a particle-laden turbulent flow

Christian Gobert, Katrin Motzet, Michael Manhart

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper focuses on the prediction of particle distributions in a flow field computed by large eddy simulation (LES). In an LES, small eddies are not resolved. This gives rise to the question in which cases these eddies need to be reconstructed (modeled) for tracing particles. Therefore the influence of eddies on the particles in dependence on eddy and particle time-scales is discussed. For the case where modeling is necessary, a stochastic model is presented. The model proposed is a model in physical space and not in velocity space, i.e. not the velocities of the unresolved eddies but the effects of these eddies on particle positions are reconstructed. The model is evaluated by an a priori analysis of particle dispersion in turbulent channel flow.

Original languageEnglish
Title of host publicationParticle-Laden Flow
Subtitle of host publicationFrom Geophysical to Kolmogorov Scales
EditorsBernard J. Geurts, Herman Clercx, Wim Uijttewaal
PublisherSpringer
Pages345-358
Number of pages14
ISBN (Print)9781402062179
DOIs
StatePublished - 2007
EventInternational Conference on Dutch Platform for Geophysical and Environmental Fluid-mechanics, PGEF 2006 - Enschede, Netherlands
Duration: 21 Jun 200623 Jun 2006

Publication series

NameERCOFTAC Series
Volume11
ISSN (Print)1382-4309
ISSN (Electronic)2215-1826

Conference

ConferenceInternational Conference on Dutch Platform for Geophysical and Environmental Fluid-mechanics, PGEF 2006
Country/TerritoryNetherlands
CityEnschede
Period21/06/0623/06/06

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