A numerical parametric study to enhance thermal hydraulic performance of a novel alternating offset oblique microchannel

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.