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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 2 of 2 (0.053 seconds)

Spelling suggestions: "subject:"zwei fluid delmodell"" "subject:"zwei fluid cellmodell""

1

Large Eddy Simulations for Dispersed bubbly Flows

Ma, Tian, Ziegenhein, Thomas, Lucas, Dirk, Krepper, Eckhard, Fröhlich, Jochen 25 November 2014 (has links) (PDF)
In this paper we present detailed Euler-Euler Large Eddy Simulations (LES) of dispersed bubbly flow in a rectangular bubble column. The motivation of this study is to investigate potential of this approach for the prediction of bubbly flows, in terms of mean quantities. The set of physical models describing the momentum exchange between the phases was chosen according to previous experiences of the authors. Experimental data, Euler-Lagrange LES and unsteady Euler-Euler Reynolds-Averaged Navier-Stokes model are used for comparison. It was found that the presented modelling combination provides good agreement with experimental data for the mean flow and liquid velocity fluctuations. The energy spectrum made from the resolved velocity from Euler-Euler LES is presented and discussed.
CFD
Blasenströmung
Mehrphasenströmung
LES
Turbulenz
Euler-Euler
Zwei Fluid Modell
CFD
bubbly flow
multiphase flow
LES
turbulence
Euler-Euler
two fluid model
2

Large Eddy Simulations for Dispersed bubbly Flows

Ma, Tian, Ziegenhein, Thomas, Lucas, Dirk, Krepper, Eckhard, Fröhlich, Jochen 25 November 2014 (has links)
In this paper we present detailed Euler-Euler Large Eddy Simulations (LES) of dispersed bubbly flow in a rectangular bubble column. The motivation of this study is to investigate potential of this approach for the prediction of bubbly flows, in terms of mean quantities. The set of physical models describing the momentum exchange between the phases was chosen according to previous experiences of the authors. Experimental data, Euler-Lagrange LES and unsteady Euler-Euler Reynolds-Averaged Navier-Stokes model are used for comparison. It was found that the presented modelling combination provides good agreement with experimental data for the mean flow and liquid velocity fluctuations. The energy spectrum made from the resolved velocity from Euler-Euler LES is presented and discussed.

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