An analytical wall-function for turbulent flows and heat transfer over rough walls

This paper reports the development of a refined wall-function strategy for the modelling of turbulent forced convection heat transfer over smooth and rough surfaces. In order to include the effects of fine-grain surface roughness, the present study extends a more fundamental work by Craft et al. [Cr...

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Bibliographic Details
Published inThe International journal of heat and fluid flow Vol. 27; no. 5; pp. 852 - 866
Main Authors Suga, K., Craft, T.J., Iacovides, H.
Format Journal Article Conference Proceeding
LanguageEnglish
Published New York, NY Elsevier Inc 01.10.2006
Elsevier Science
Subjects
Boundary layer and shear turbulence
Convection and heat transfer
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Heat transfer
Physics
Rough wall
Turbulence modelling
Turbulence simulation and modeling
Turbulent flows, convection, and heat transfer
Wall-function
Rough wall
Heat transfer
Wall-function
Turbulence modelling
Temperature distribution
Forced convection
Turbulent flow
Digital simulation
Roughness
Velocity distribution
Modelling
Boundary layers
Turbulence structure
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ISSN0142-727X
1879-2278
DOI10.1016/j.ijheatfluidflow.2006.03.011

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Summary:This paper reports the development of a refined wall-function strategy for the modelling of turbulent forced convection heat transfer over smooth and rough surfaces. In order to include the effects of fine-grain surface roughness, the present study extends a more fundamental work by Craft et al. [Craft, T.J., Gerasimov, A.V., Iacovides, H., Launder, B.E., 2002. Progress in the generalisation of wall-function treatment. Int. J. Heat Fluid Flow 23, 148–160] on the development of advanced wall-functions of general applicability. The presently proposed model is validated through comparisons with data available for internal flows through channels and for external flows over flat and curved plates with both smooth and rough surfaces. Then, its further validation in separating flows over a sand dune and a sand-roughened ramp is discussed. The validation results suggest that the presently proposed form can be successfully applied to a wide range of attached and separated turbulent flows with heat transfer over smooth and fine-grain rough surfaces.
ISSN:0142-727X
1879-2278
DOI:10.1016/j.ijheatfluidflow.2006.03.011