Effects of Roughness on Gaseous Flow Characteristics in Microchannels
HU Guang
HU Gangyi
PENG Xuechuang
TANG Ying
LV Xiangkui
Abstract：A flow and heat transfer numerical simulation is performed for a 2D gaseous flow through microchannels to investigate the effects of relative roughness .These effects are simulated by various relative roughness .The numerical results demonstrate that recirculation zones and barriers lead to the pressure drop and average poiseuille number(Po number) in‐creasing .For incompressible cases ,the relative roughness'existence could undermine the export effect .Compared with the relative roughness effects on the Po numbers ,there are relatively less effects on the Nusselt numbers(Nu number) .The re‐sults can provide references to the microchannel design .
Keywords：relative roughnessmicrochannelgaseous flownumerical analysis
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 57-60,82 )