Prediction of regime transition in three-phase sparged reactors using linear stability analysis

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dc.contributor.author Ghatage, Swapnil V.
dc.contributor.author Bhole, Manish R.
dc.contributor.author Joshi, Jyeshtharaj B.
dc.contributor.author Evans, Geoffrey M.
dc.date.accessioned 2014-03-17T08:58:30Z
dc.date.available 2014-03-17T08:58:30Z
dc.date.issued 2014-01
dc.identifier.citation Ghatage, Swapnil V.; Bhole, Manish R.; Padhiyar, Nitin; Joshi, Jyeshtharaj B. and Evans Geoffrey M., “Prediction of regime transition in three-phase sparged reactors using linear stability analysis, Chemical Engineering Journal, DOI: 10.1016/j.cej.2013.08.095, Aug 2013. en_US
dc.identifier.issn 0009-2509
dc.identifier.uri http://dx.doi.org/10.1016/j.cej.2013.08.095
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/839
dc.description.abstract The estimation of critical gas holdup at which the transition from homogeneous regime to heterogeneous regime occurs is crucial for the design and scale-up of multiphase reactors. A number of experimental and empirical studies are published in the literature, however, there exists a lack of modeling studies which can satisfactorily predict the flow regime transition in three-phase sparged reactors. In the present work, the theory of linear stability analysis has been extended to investigate the hydrodynamic stability of three-phase sparged reactors (slurry bubble columns and three-phase fluidization). A mathematical model has been developed for the prediction of regime transition over a wide range of bubble size (0.7–20 × 10−3 m) and terminal rise velocity (80–340 × 10−3 m/s), particle settling velocity (1–1000 × 10−3 m/s), particle concentration (0.0007–30 vol%) and slurry density (800–5000 kg/m3). It was observed that the developed model predicts the transition gas holdup within an absolute deviation of 12% for three-phase sparged reactors. It was also observed that the developed generalized stability criterion predicts the regime transition in two-phase systems satisfactorily when applied to bubble columns. en_US
dc.description.statementofresponsibility by Swapnil V. Ghatage and Nitin Padhiyar
dc.format.extent Vol. 235, No. 1, pp. 307–330
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Bubble column en_US
dc.subject Flow regime transition en_US
dc.subject Linear stability analysis en_US
dc.subject Slurry bubble column en_US
dc.subject Three-phase fluidization en_US
dc.title Prediction of regime transition in three-phase sparged reactors using linear stability analysis en_US
dc.type Article en_US
dc.relation.journal Chemical Engineering Science


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