Prediction of turbulent heat fluxes and temperature fluctuations

Lam C.K.G. and Bremhorst K. (1979) Prediction of turbulent heat fluxes and temperature fluctuations. Letters in Heat and Mass Transfer, 6 6: 489-501. doi:10.1016/0094-4548(79)90060-2


Author Lam C.K.G.
Bremhorst K.
Title Prediction of turbulent heat fluxes and temperature fluctuations
Journal name Letters in Heat and Mass Transfer
ISSN 0094-4548
Publication date 1979
Sub-type Article (original research)
DOI 10.1016/0094-4548(79)90060-2
Volume 6
Issue 6
Start page 489
End page 501
Total pages 13
Abstract It is shown that the conventional turbulent Prandtl number approach is grossly inadequate to predict turbulent heat fluxes in other than the cross-stream direction. A theory is presented which shows that the turbulent diffusivity is a second order tensor consisting of two parts. Based on this theory, a heat flux model is formed and has been applied to fully developed pipe flow. Excellent agreement with measurements has been obtained by adjusting the model constants. Temperature fluctuations in fully developed pipe flow have also been calculated from a model transport equation. Best agreement with experiment is achieved with the model constants assuming values different to those recommended by previous workers.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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