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Investigation of a two-equation turbulent heat transfer model applied to ducts

Rokni, Masoud LU and Sundén, Bengt LU (2003) In Journal of Heat Transfer 125(1). p.194-200
Abstract
This investigation concerns numerical calculation of fully developed turbulent forced convective heat transfer and fluid flow in ducts over a wide range of Reynolds numbers. The low Reynolds number version of a non-linear eddy viscosity model is combined with a two-equation heat flux model with the eddy diffusivity concept. The model can theoretically be used for a range of Prandtl numbers or a range of at different fluids. The computed results compare satisfactory with the. available experiment. Based on existing DNS data and calculations in this work the ratio between the time-scales (temperature to velocity) is found to be approximately 0.7. In light of this assumption an algebraic scalar flux model with variable diffusivity is... (More)
This investigation concerns numerical calculation of fully developed turbulent forced convective heat transfer and fluid flow in ducts over a wide range of Reynolds numbers. The low Reynolds number version of a non-linear eddy viscosity model is combined with a two-equation heat flux model with the eddy diffusivity concept. The model can theoretically be used for a range of Prandtl numbers or a range of at different fluids. The computed results compare satisfactory with the. available experiment. Based on existing DNS data and calculations in this work the ratio between the time-scales (temperature to velocity) is found to be approximately 0.7. In light of this assumption an algebraic scalar flux model with variable diffusivity is presented. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
turbulence, modeling, heat transfer, channel flow, convection
in
Journal of Heat Transfer
volume
125
issue
1
pages
194 - 200
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • wos:000180915100028
  • scopus:0038239794
ISSN
0022-1481
DOI
language
English
LU publication?
yes
id
024ff6dd-ab79-46f5-976c-b8aea8c5bf56 (old id 318603)
date added to LUP
2007-09-20 18:13:20
date last changed
2018-05-29 10:01:04
@article{024ff6dd-ab79-46f5-976c-b8aea8c5bf56,
  abstract     = {This investigation concerns numerical calculation of fully developed turbulent forced convective heat transfer and fluid flow in ducts over a wide range of Reynolds numbers. The low Reynolds number version of a non-linear eddy viscosity model is combined with a two-equation heat flux model with the eddy diffusivity concept. The model can theoretically be used for a range of Prandtl numbers or a range of at different fluids. The computed results compare satisfactory with the. available experiment. Based on existing DNS data and calculations in this work the ratio between the time-scales (temperature to velocity) is found to be approximately 0.7. In light of this assumption an algebraic scalar flux model with variable diffusivity is presented.},
  author       = {Rokni, Masoud and Sundén, Bengt},
  issn         = {0022-1481},
  keyword      = {turbulence,modeling,heat transfer,channel flow,convection},
  language     = {eng},
  number       = {1},
  pages        = {194--200},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  series       = {Journal of Heat Transfer},
  title        = {Investigation of a two-equation turbulent heat transfer model applied to ducts},
  url          = {http://dx.doi.org/},
  volume       = {125},
  year         = {2003},
}