Dispersion of (light) inertial particles in stratified turbulence

M. Aartrijk, van, H.J.H. Clercx

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

Abstract

We present a brief overview of a numerical study of the dispersion of particles in stably stratified turbulence. Three types of particles are examined: fluid particles, light inertial particles ( Pp/pf = O(1) ) and heavy inertial particles (P p / ¿ f ¿ >> 1). Stratification suppresses the vertical dispersion of all three types of particles compared to isotropic turbulence. The horizontal dispersion, on the other hand, is enhanced. The importance of the forces that act on inertial particles are examined and the results are shown for particles with ¿ p / ¿ f ¿ = ¿ 10. The inertia of the particles results in a nonuniform particle distribution over the domain. This preferential concentration effect is presented here for heavy particles, and it is found that the effect is stronger in isotropic turbulence than in stratified turbulence.
Original languageEnglish
Title of host publicationProceedings of the Ercoftac Workshop Direct and Large-Eddy Simulations 7 (DLES7), ICTP, Trieste, Italy, 8-10 September, 2008
EditorsV. Armenio, B. Geurts
Place of PublicationBerlin
PublisherSpringer
Pages469-475
DOIs
Publication statusPublished - 2008
Event7th ERCOFTAC Workshop on Direct and Large-Eddy Simulations (DLES7), September 8-10, 2008, Trieste, Italy - Trieste, Italy
Duration: 8 Sep 200810 Sep 2008

Publication series

NameErcoftac Series
Volume13
ISSN (Print)1382-4309

Workshop

Workshop7th ERCOFTAC Workshop on Direct and Large-Eddy Simulations (DLES7), September 8-10, 2008, Trieste, Italy
Abbreviated titleDLES7
Country/TerritoryItaly
CityTrieste
Period8/09/0810/09/08
OtherERCOFTAC

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