Investigation of a two-equation turbulent heat transfer model applied to ducts
(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:
https://lup.lub.lu.se/record/318603
- author
- Rokni, Masoud LU and Sundén, Bengt LU
- organization
- publishing date
- 2003
- 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
- 10.1115/1.1532017
- language
- English
- LU publication?
- yes
- id
- 024ff6dd-ab79-46f5-976c-b8aea8c5bf56 (old id 318603)
- date added to LUP
- 2016-04-01 16:48:22
- date last changed
- 2022-01-28 22:17:42
@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}}, keywords = {{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/10.1115/1.1532017}}, doi = {{10.1115/1.1532017}}, volume = {{125}}, year = {{2003}}, }