Scalar mixing in turbulent confined flow

D. Kolomensky, B. Kadoch, W. J.T. Bos, K. Schneider, P. Angot

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

Abstract

We study the influence of solid boundaries on the scalar transport and mixing in two-dimensional decaying turbulence. It was shown previously that walls have a strong influence on Lagrangian statistics. Two distinct geometries are considered: a square with periodic boundary conditions and a circular domain with no-slip boundary conditions for velocity and no-flux for the scalar. Direct numerical simulations are performed with a pseudo-spectral code, where a penalization method is used to take into account the boundary conditions. Our study shows that the mixing is more pronounced in the confined case due to the stronger production of scalar gradients.

Original languageEnglish
Title of host publicationAdvances in Turbulence XII - Proceedings of the 12th EUROMECH European Turbulence Conference
PublisherSpringer Verlag
Pages525-528
Number of pages4
ISBN (Print)9783642030840
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event12th EUROMECH European Turbulence Conference, ETC 12 - Marburg, Germany
Duration: 7 Sep 200910 Sep 2009

Publication series

NameAdvances in Turbulence XII - Proceedings of the 12th EUROMECH European Turbulence Conference

Conference

Conference12th EUROMECH European Turbulence Conference, ETC 12
Country/TerritoryGermany
CityMarburg
Period7/09/0910/09/09

Keywords

  • Mixing
  • Passive scalar
  • Turbulence

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