Open Access

ARTICLE

NUMERICAL STUDY OF AIR FORCED CONVECTION IN A CHANNEL PROVIDED WITH INCLINED RIBS

Oronzio Manca^*, Sergio Nardini, Daniele Ricci

Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli Real Casa dell’Annunziata, via Roma 29, 81031 Aversa, Italy

* Corresponding Author: Email:

Frontiers in Heat and Mass Transfer 2011, 2(1), 1-8. https://doi.org/10.5098/hmt.v2.1.3007

Abstract

Convective heat transfer may be enhanced passively by adopting rough surfaces. Ribs break the laminar sub-layer and create local turbulence in the channel, reducing thermal resistance and enhancing the heat transfer. However, higher losses are expected. In this paper a numerical investigation is carried out on air forced convection in a rectangular ribbed channel. A three-dimensional model is developed to study the effect of the angle between the fluid flow direction and the ribbed surface, provided with rectangular turbulators, in the turbulent flow. Simulations s that Nusselt numbers as well as the pressure drops increase as the inclination angles increase.

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