Effect of turbulence on particle and bubble slip velocity

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dc.contributor.author Ghatage, Swapnil V.
dc.contributor.author Sathe, Mayur J.
dc.contributor.author Doroodchi, Elham
dc.contributor.author Joshi, Jyeshtharaj B.
dc.contributor.author Evans, Geoffrey M.
dc.date.accessioned 2014-03-17T08:52:38Z
dc.date.available 2014-03-17T08:52:38Z
dc.date.issued 2013-08
dc.identifier.citation Ghatage, Swapnil V.; Sathec, Mayur J.; Doroodchi, Elham; Joshi, Jyeshtharaj B. and Evans, Geoffrey M., “Effect of turbulence on particle and bubble slip velocity”, Chemical Engineering Science, DOI: 10.1016/j.ces.2013.03.031, vol. 100, pp. 120-136, Mar 2013. en_US
dc.identifier.issn 0009-2509
dc.identifier.uri http://dx.doi.org/10.1016/j.ces.2013.03.031
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/838
dc.description.abstract In multiphase systems involving a dispersed phase, such as fluidized beds, the interphase exchange of mass, heat and momentum transfer can be very different from those from a single particle, droplet or bubble system under terminal conditions. Such differences need to be correctly predicted for proper design of multiphase reactors. However, most existing methodologies still rely heavily on empirical relationships for parameters such as slip velocity, especially for systems operating under turbulent conditions where there is wide difference in the reported results. In this study the hindered settling/rising (slip) velocity of single steel particles (dPD=5–12 mm) and single air bubbles (dB=1–4 mm) has been measured in a solid–liquid fluidized bed of uniform size borosilicate glass beads (dP=5 and 8 mm) as a function of liquid superficial velocity. The homogeneity and intensity of the turbulence within the fluidized bed has been quantified and directly related to the slip velocity of the foreign (steel or bubble) particle. It was found that the turbulence resulted in an increase in the computed drag coefficient for all of the experimental conditions investigated. en_US
dc.description.statementofresponsibility by Swapnil V. Ghatage et al.,
dc.format.extent Vol. 100, pp. 120-136
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Bubbles en_US
dc.subject Drops en_US
dc.subject Hindered settling velocity en_US
dc.subject Particles en_US
dc.subject Slip velocity en_US
dc.subject Turbulence en_US
dc.title Effect of turbulence on particle and bubble slip velocity en_US
dc.type Article en_US
dc.relation.journal Chemical Engineering Science


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