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An explicit WET-type model for the turbulent scalar fluxes

In English

Författare

Redaktör

  • 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

Avdelning/ar

Publiceringsår

2002

Språk

Engelska

Sidor

55-64

Publikation/Tidskrift/Serie

Advances in Fluid Mechanics. AFM 2002. Fourth International Conference

Dokumenttyp

Konferensbidrag

Förlag

WIT Press

Ämne

  • Energy Engineering

Nyckelord

  • 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/Övrigt

  • ISBN: 1-85312-910-0