ARTICLE:

• THREE-DIMENSIONAL NUMERICAL MODELLING OF FLOW AND HEAT TRANSFER OVER LOUVERED FIN ARRAYS  download article

S. M. El-Hawat
School of Engineering, The University of Brighton, Cockcroft Building, Lewes Road, Brighton BN2 4GJ, United Kingdom

Morgan R. Heikal
School of Environment and Technology, Faculty of Science and Engineering, The University of Brighton, Cockcroft Building, Lewes Road, Brighton BN2 4GJ, United Kingdom

Sergei S. Sazhin
Sir Harry Ricardo Laboratories, Internal Combustion Engines Group, School of Environment and Technology, Faculty of Science and Engineering, The University of Brighton, Cockcroft Building, Brighton BN2 4GJ, UK

ABSTRACT

A three-dimensional numerical model of flow and heat transfer over louvered fin arrays in compact heat exchangers is discussed. This model takes into account the effects of the fins' non-louvered regions in the immediate vicinity of the tubes. A detailed comparison between the predictions of this model and the model that does not take into account these effects is presented. It is pointed out that taking into account these effects leads to a reduction of the friction factor and the overall heat transfer rate. Predictions of the new model are in a better agreement with experimental data when compared with the previously suggested models.

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325-332 pages

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