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

Masoud Rokni, Bengt Sundén

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11 Citeringar (SciVal)

Sammanfattning

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.
Originalspråkengelska
Sidor (från-till)194-200
TidskriftJournal of Heat Transfer
Volym125
Utgåva1
DOI
StatusPublished - 2003

Ämnesklassifikation (UKÄ)

  • Energiteknik

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