Experimental study on interfacial area transport in bubbly two-phase flows

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)3019-3035
Journal / PublicationInternational Journal of Heat and Mass Transfer
Issue number16
Publication statusPublished - Aug 1999
Externally publishedYes


In relation to the development of the interfacial area transport equation, local measurements of the void fraction, interfacial area concentration, interfacial velocity, and Sauter mean diameter using the double sensor probe method as well as the liquid velocity and turbulence intensity using hotfilm anemometry, were performed extensively for vertical upward bubbly air-water flows in a round tube with an inner diameter of 25.4 mm at three axial locations of L/D = 12.0, 65.0 and 125, and fifteen radial locations from r/R = 0 to 0.95. The liquid flow rate and the void fraction ranged from 0.292 m/s to 3.49 m/s and from 3% to 27%, respectively. The data set obtained in this study will eventually be used for the development of reliable constitutive relations which reflect the true transfer mechanisms in bubbly flow systems.

Research Area(s)

  • Bubble size, Bubbly flow, Gas-liquid flow, Hotfilm anemometry, Interfacial area concentration, Interfacial area transport, Local measurement, Multiphase flow, Pipe flow, Resistivity probe, Turbulence, Two-fluid model, Void fraction

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