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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

HEAT TRANSFER IN TURBULENT FLOWS

Get access (open in a dialog) DOI: 10.1615/IHTC7.4200
pages 31-57

Sinopsis

This paper reviews recent progress in the turbulent heat transfer under forced convection with an emphasis on the new experimental findings useful for future turbulence models. Among the models currently existing, the Two-Equation models have been well tested in many turbulent flows and evaluated as a powerful tool for prediction. But to increase the capability and universality, the models still need further study and refinement by the comparison with the experimental data. Hence this paper contains a survey of the modeling of a wall effects and also of the Reynolds stress and turbulent heat flux equations. In contrast to the time-averaged analysis, the knowledge on coherent structures of turbulent boundary layers has been accumulated in the last decade. They have been brought out through advances in instrumentations with the aid of computers. The flow visualizations played an important role in improving our physical understanding of complicated turbulent flow structures. They are still a potent tool for reducing complex flow process to simple pictures and for developing a model of turbulence. This paper also integrates some attempts of structural modeling to take into account the coherent structures of turbulence.