Numerical investigation and parameter analysis of oblique-finned with square corrugations to improve heat transfer performance

Abstract

Current investigation aims to introduce and analyze an oblique-finned corrugated to evaluate numerically an unique method for improving heat transfer. Vertical gap ratios (V) of 0.15, 0.20, and 0.25; horizontal gap ratios (H) of 0.03, 0.04, and 0.05 as well as oblique-angle (θ) values of 10°, 20°, and 40° are just a few of the design factors that are examined. The targeted channels are subjected to turbulent air flows that are simulated using the finite volume technique (FVM) and the κ-ε model under constant temperature circumstances (T = 300 K). The data show that the novel approach enhances fluid mixing, which enhances heat transfer and, ultimately, thermal-hydraulic performance (PEC). The outcomes also show that frictional loss was employed to stimulate the target system's overall performance in the way of reducing the impact of heat transfer. Additionally, the findings uncover that, in comparison to other gap ratios, a moderate vertical gap ratio and a large horizontal gap ratio have a greater impact on heat transfer rate and PEC, respectively. Accordingly, the Nusselt number enhances by 73 %, 74 %, and 72 % across the same range of Reynolds number at a group of gap ratios (V = 0.15, h = 0.04), (V = 0.2, h = 0.05), and (V = 0.25, h = 0.05), respectively. Besides, the design parameters V = 0.2, H = 0.05, andθ = 40° yielded the best PEC of 2.547. New correlations for the innovative oblique-finned corrugated model are also presented.