Flow Characteristics and Heat Transfer Enhancement of Sinusoidal Corrugated Channels with Different Configurations

Abstract

This study investigated flow characteristics and heat transfer enhancement in various sinusoidal corrugated channels. The channel height and the phase shift effects on the flow structures and thermal performances were examined numerically for Reynolds numbers in the range of 2500≤Re≤7500. The geometrical configurations of this study cover three different channel heights (Hmin/Hmax=0.36, 0.54, 0.72) and three phase shift angles (φ=0°, 90°, 180°). Velocity distribution, turbulence intensity, local and averaged Nusselt numbers, and friction factor were calculated for various configurations. Finally, thermal performance factors (TPF) were also calculated to determine the optimum channel configuration and
 operating condition.