| Titre : | Effects of corrugated roughness on developed laminar flow in microtubes (2009) |
| Auteurs : | Zhipeng Duan, Auteur ; Y. S. Muzychka, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME . Journal of fluids engineering (Vol. 130 N° 3, Mars 2008) |
| Article en page(s) : | 7 p. |
| Note générale : | Fluids engineering |
| Langues : | Anglais |
| Tags : | 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&direction=P |
