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Erschienen in:

2018 | OriginalPaper | Buchkapitel

9. Turbulence Effects on Convective Heat Transfer

verfasst von : Forrest E. Ames

Erschienen in: Handbook of Thermal Science and Engineering

Verlag: Springer International Publishing

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Abstract

The subject of this chapter is the influence of flow field turbulence on heat transfer augmentation to both the turbulent and laminar boundary layers. Initially, the response of turbulence to the presence of a wall is reviewed as background to one of the key constraints in the interaction of turbulence to both turbulent and laminar boundary layers. Next, research on the influence of external turbulence to the flat plat turbulent boundary layer is discussed in terms of both the physics of the interaction of external turbulence with a developing turbulent boundary layer and the correlation of the resulting enhancement. A simple physics based eddy diffusivity model for the external turbulence is presented and predictive results using this model are presented and discussed. The influence of turbulence on laminar boundary layer heat transfer augmentation to stagnation region and other laminar regions is also reviewed. Initially, the influence of both the strain field and leading edge surface on the intensification of small scale turbulence and the blocking of relatively large scale turbulence is discussed. A physically based correlating method for stagnation region heat transfer augmentation is presented along with historical and alternate models. Heat transfer augmentation mechanisms in laminar regions with no intensification are also discussed and the simple physics based eddy diffusivity model for the turbulent boundary layer is extended to laminar flow prediction.

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Vorheriges Kapitel Single-Phase Convective Heat Transfer: Basic Equations and Solutions

Nächstes Kapitel Full-Coverage Effusion Cooling in External Forced Convection: Sparse and Dense Hole Arrays

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Titel: Turbulence Effects on Convective Heat Transfer
verfasst von: Forrest E. Ames
Verlag: Springer International Publishing
Buch: Handbook of Thermal Science and Engineering
Print ISBN: 978-3-319-26694-7

Electronic ISBN: 978-3-319-26695-4

Copyright-Jahr: 2018
DOI: https://doi.org/10.1007/978-3-319-26695-4_17

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