Abstract

A novel alternating offset oblique microchannel (AOOMC) is proposed aimed at enhancing the thermal–hydraulic performance (THP) in microchannels. 3-D, conjugate numerical simulations are carried out over a range of Reynolds number from 200 to 800. The effect of three geometric parameters, relative oblique channel width $(\alpha ),$ relative fin offset width $(\beta ),$ and oblique angle $(\theta ),$ on THP is evaluated. THP shows an increasing–decreasing trend with $\alpha$ and increases with increase in $\beta$ and $\theta$ for the range tested. The optimal geometry, $\alpha =0.5,$ $\beta =0.25,$ and $\theta =60°,$ showcases the highest THP of 2.41 at Re = 800 which is superior to other enhanced microchannel geometries from the literature.

摘要

提出了一种新颖的交替偏置斜向微通道（AOOMC），旨在增强微通道中的热工水力性能（THP）。在200到800范围内的雷诺数范围内进行了3-D共轭数值模拟。三个几何参数（相对斜通道宽度）的影响$（\alpha ），$ 相对鳍片偏移宽度 $（\beta ），$ 和斜角 $（\theta ），$在THP上进行评估。THP呈上升-下降趋势，$\alpha$ 并随着增加 $\beta$ 和 $\theta$对于测试范围。最佳几何形状$\alpha =0.5，$ $\beta =0.25，$ 和 $\theta =60°，$展示了Re  = 800时的最高THP为2.41，优于文献中其他增强的微通道几何形状。