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An explicit WET-type model for the turbulent scalar fluxes

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Author

Editor

  • M. Rahman
  • R. Verhoeven
  • C.A. Brebbia

Summary, in English

A new explicit WET model for the turbulent heat fluxes is derived and developed from the transport equation of the scalar passive flux. In order to study the performance of the model itself, all other turbulent quantities are taken from a DNS channel flow data-base and thus the error source has been minimized. This anisotropic eddy diffusivity model can be solved with a two-equation model for the temperature field based on the temperature variance and its dissipation rate. The model can theoretically be used for a range of Prandtl numbers or a range of different fluids. The results are compared with the DNS channel flow and fairly good agreement is achieved

Department/s

Publishing year

2002

Language

English

Pages

55-64

Publication/Series

Advances in Fluid Mechanics. AFM 2002. Fourth International Conference

Document type

Conference paper

Publisher

WIT Press

Topic

  • Energy Engineering

Keywords

  • fluids
  • dissipation rate
  • temperature variance
  • anisotropic eddy diffusivity model
  • DNS channel flow
  • scalar passive flux
  • transport equation
  • turbulent heat fluxes
  • WET type model
  • turbulent scalar fluxes
  • Prandtl numbers
  • domain name system channel flow

Conference name

4th International Conference on Advances in Fluid Mechanics

Conference date

2002-05-15 - 2002-05-17

Conference place

Ghent, Belgium

Status

Published

ISBN/ISSN/Other

  • ISBN: 1-85312-910-0