A fast method for determining the flow conductance of gas microfluidic devices / Matteo Martinelli in Transactions of the ASME . Journal of fluids engineering, Vol. 132 N° 12 (Décembre 2010)  

Public ISBD [article]  inTransactions of the ASME . Journal of fluids engineering > Vol. 132 N° 12 (Décembre 2010) . - 06 p. Titre : A fast method for determining the flow conductance of gas microfluidic devices Type de document : texte imprimé Auteurs : Matteo Martinelli, Auteur ; Vladimir Viktorov, Auteur Année de publication : 2011 Article en page(s) : 06 p. Note générale : fluids engineering Langues : Anglais (eng) Mots-clés : pressure  flow (dynamics)  microfluidics  electrical conductance Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : This paper presents a fast method for determining the conductance of gas microfluidic devices with low flow rates and very small pressure drops starting from 30 Pa, corresponding to Re=0.3. This method is based on discharging a gas-pressurized chamber through the microfluidic device under test. The microfluidic device’s conductance can be estimated as a function of inlet pressure and the Reynolds number of the flow by recording the upstream pressure during the discharging process and calculating the time derivative of the gas pressure. The pressurized chamber is considered as an isothermal chamber. Experimental results show that a sufficiently accurate isothermal discharging process up to an upstream-to-downstream pressure ratio of 0.8 can be achieved by immersing the chamber in a thermal bath. The method presented here is very fast, requiring only a few seconds for the acquisition procedure and computerized data processing. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27443 [...] [article] A fast method for determining the flow conductance of gas microfluidic devices [texte imprimé] / Matteo Martinelli, Auteur ; Vladimir Viktorov, Auteur . - 2011 . - 06 p. fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 132 N° 12 (Décembre 2010) . - 06 p. Mots-clés : pressure  flow (dynamics)  microfluidics  electrical conductance Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : This paper presents a fast method for determining the conductance of gas microfluidic devices with low flow rates and very small pressure drops starting from 30 Pa, corresponding to Re=0.3. This method is based on discharging a gas-pressurized chamber through the microfluidic device under test. The microfluidic device’s conductance can be estimated as a function of inlet pressure and the Reynolds number of the flow by recording the upstream pressure during the discharging process and calculating the time derivative of the gas pressure. The pressurized chamber is considered as an isothermal chamber. Experimental results show that a sufficiently accurate isothermal discharging process up to an upstream-to-downstream pressure ratio of 0.8 can be achieved by immersing the chamber in a thermal bath. The method presented here is very fast, requiring only a few seconds for the acquisition procedure and computerized data processing. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27443 [...]

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