Effects of corrugated roughness on developed laminar flow in microtubes / Zhipeng Duan in Transactions of the ASME . Journal of fluids engineering, Vol. 130 N° 3 (Mars 2008)  

Effects of corrugated roughness on developed laminar flow in microtubes [texte imprimé] / Zhipeng Duan, Auteur ; Y. S. Muzychka, Auteur . - 2009 . - 7 p.
Fluids engineering
Langues : Anglais (eng)
in Transactions of the ASME . Journal of fluids engineering > Vol. 130 N° 3 (Mars 2008) . - 7 p.

Mots-clés :	Corrugated surface roughness  laminar flow  momentum equation
Résumé :	The effects of corrugated surface roughness on developed laminar flow in microtubes are investigated. The momentum equation is solved using a perturbation method with slip at the boundary. Novel analytical models are developed to predict friction factor and pressure drop in corrugated rough microtubes for continuum flow and slip flow. The developed model proposes an explanation on the observed phenomenon that some experimental pressure drop results for microchannel flow have shown a significant increase (15–50%) due to roughness. The developed model for slip flow illustrates the coupled effects between velocity slip and small corrugated roughness. Compressibility effect has also been examined and simple models are proposed to predict the pressure distribution and mass flow rate for slip flow in corrugated rough microtubes.
En ligne :	http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27301 [...]