Heat transfer characteristics of turbulent flow in periodic channels

Abstract

Periodic fully-developed fluid flow and heat transfer characteristics are obtained numerically for turbulent flow in a channel with repeated baffle blockages. The channel has a rectangular cross-section and the baffles are located on the upper and lower walls in a staggered array. The Lam–Bremhorst low-Reynolds number form of themodel is used for the computations. The computations are performed for a set of geometric parameters. Reynolds number ranges from 103 to 104,Prandtle number is 0.7 (air), and the wall temperature is assumed to be uniform. The computational results are compared with experimental data and close agreement is observed. The results indicate that the baffles have an increasing effect on transfer coefficients