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THMT-12. Proceedings of the Seventh International Symposium On Turbulence Heat and Mass Transfer
September, 24-27, 2012, Palermo, Italy

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal


ISBN Print: 978-1-56700-302-4

ISSN: 2377-2816

A wall heat transfer function for equilibrium flows - a combination of Reichardt and Kader profiles with Wang type scaling

pages 90-94
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.90
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Краткое описание

This paper presents a heat transfer correlation developed from the Reichardt [1] profile, the Kader [2] correlation and a scaling similar to the inner scaling ofWang [3]. The novelty of this correlation is that it is not just a function of the non-dimensional wall distance y+ but, in a similar way to Wang [3], also the non-dimensional velocity u+ and temperature T+ in wall units. The correlation coefficients are derived based on DNS heated channel flow data ([4],[5] and [6]) for a wide range of Prandtl numbers (0.025 < Pr < 10). The correlation is shown to capture the change in slope of the logarithmic region observed in the natural convection boundary layer experiment of Tsuji [8], a feature the functions based on the non-dimensional wall distance y+ cannot capture.

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