Numerical Study of Turbulent Periodic Flow and Heat Transfer in a Square Channel with Different Ribs

Ahmed M. Bagabir, Jabril A. Khamaj, Ahmed S. Hassan

Faculty of Engineering, Jazan University, Jazan, Saudi Arabia.

DOI: 10.4236/jamp.2013.16014                

Abstract

A numerical investigation has been carried out to examine turbulent flow and heat transfer characteristics in a three-dimensional ribbed square channels. Fluent 6.3 CFD code has been used. The governing equations are discretized by the second order upwind differencing scheme, decoupling with the SIMPLE (semi-implicit method for pressure linked equations) algorithm and are solved using a finite volume approach. The fluid flow and heat transfer characteristics are presented for the Reynolds numbers based on the channel hydraulic diameter ranging from 10⁴ to 4 ′ 10⁴. The effects of rib shape and orientation on heat transfer and pressure drop in the channel are investigated for six different rib configurations. Rib arrays of 45° inclined and 45° V-shaped are mounted in inline and staggered arrangements on the lower and upper walls of the channel. In addition, the performance of these ribs is also compared with the 90° transverse ribs.

Keywords

Ribs; Square Channel; Heat Transfer; Numerical Simulation; Turbulent Flow; Periodic Flow

Conflicts of Interest

The authors declare no conflicts of interest.

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