Abstract
In this paper, the heat transfer and flow characteristics for various sinusoidal wavy channels models with different spacing ratio ε = s/2A and waviness parameter γ = 2A/L are numerically investigated using the Finite Element Method (FEM) based Comsol Multiphysics software (vers.5.2). The channel length Lx and wavelength (corrugation pitch) L are maintained constant during simulations. The channel dimensions modified are the width s (at values of 1.5, 2, 2.5 and 3 mm) and the amplitude A (at values of 0.4, 0.65, 0.8 and 1 mm). Results show that corrugated channel models with increased s values at A = 0.65 mm are affected in terms of thermal boundary layer thickness and local Nusselt number amplitude along the lower channel wall. By raising A values with s = 2 mm, the local pressure drop and friction coefficient are clearly influenced also.
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