Experimental study of ultrasonic characteristics in air-water bubbly flows

dc.contributor.authorCarvalho, R.D.M.
dc.contributor.authorVenturini, O.J.
dc.contributor.authorNeves-Jr, F.
dc.contributor.authorArruda, L.V.R.
dc.contributor.authorFrança, F.A.
dc.date.accessioned2014-07-18T09:01:05Z
dc.date.available2014-07-18T09:01:05Z
dc.date.issued2007
dc.description.abstractPaper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.en_US
dc.description.abstractIn the oil industry there is a need to determine the dispersed phase holdup in multiphase flows using noninvasive, fast responding techniques; ultrasonic techniques apparently can fulfill these requirements. In this regard, the proposed paper analyzes the ultrasonic signals obtained through vertical, upward air-water flows in the zero to 14% void fraction range. Initially, the experimental apparatus and the flow patterns observed are discussed. Next follows a discussion of the ultrasonic signals characteristics and the trends in the transit time and attenuation. A new transit time definition is proposed that could be used for the characterization of two-phase flows.en_US
dc.description.librariancs2014en_US
dc.format.extent6 pagesen_US
dc.format.mediumPDFen_US
dc.identifier.citationCarvalho, RDM, Venturini, OJ, Neves-Jr, F, Arruda, LVR & França, FA 2007, 'Experimental study of ultrasonic characteristics in air-water bubbly flows', Paper presented to the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July 2007.en_US
dc.identifier.isbn9781868546435
dc.identifier.urihttp://hdl.handle.net/2263/40877
dc.language.isoenen_US
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_US
dc.relation.ispartofHEFAT 2007
dc.rightsUniversity of Pretoriaen_US
dc.rights.uriUniversity of Pretoriaen_US
dc.subjectUltrasonic techniquesen_US
dc.subjectUltrasonic signals characteristicsen_US
dc.subjectCharacterization of two-phase flowsen_US
dc.subjectMultiphase flowsen_US
dc.subjectTransit timeen_US
dc.titleExperimental study of ultrasonic characteristics in air-water bubbly flowsen_US
dc.typePresentationen_US

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