{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361137045933566464.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/cjce.5450720102"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcjce.5450720102"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/cjce.5450720102"}}],"dc:title":[{"@value":"The role of gas phase momentum in determining gas holdup and hydrodynamic flow regimes in bubble column operations"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>Experiments conducted in 0.15 m diameter bubble columns using water and non‐aqueous liquids have shown that the gas velocity at which transition from the bubbly flow to the churn‐turbulent flow regime occurs is a function of gas density. The transition velocity increased with increasing gas density. The direct effect of gas density on gas holdup in the bubbly flow regime is small with only a slight increase in holdup being observed at higher densities (ϵ<jats:sub>G</jats:sub> α ρ<jats:sub>g</jats:sub> <jats:sup>0.04</jats:sup>). In the churnturbulent region a much greater effect of gas density on gas holdup was observed. These differences were found to be a direct function of the differences in holdup values at the transition points. Gas holdup was found to be a function of the gas phase momentum. In the bubbly flow regime holdup was directly proportional to momentum while in the churn‐turbulent regime holdup was proportional to momentum to the one third power.</jats:p><jats:p>Reasons for this behaviour are discussed, as well as the implied effects on liquid mixing in bubble column slurry reactors. The effects of gas density may offer an explanation for some apparently anomalous published results.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137045933566467","@type":"Researcher","foaf:name":[{"@value":"I. G. Reilly"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045933566466","@type":"Researcher","foaf:name":[{"@value":"D. S. Scott"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045933566464","@type":"Researcher","foaf:name":[{"@value":"T. J.W Debruijn"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045933566465","@type":"Researcher","foaf:name":[{"@value":"D. Macintyre"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00084034"},{"@type":"EISSN","@value":"1939019X"},{"@type":"PISSN","@value":"http://id.crossref.org/issn/00084034"},{"@type":"PISSN","@value":"https://id.crossref.org/issn/00084034"}],"prism:publicationName":[{"@value":"The Canadian Journal of Chemical Engineering"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"1994-02","prism:volume":"72","prism:number":"1","prism:startingPage":"3","prism:endingPage":"12"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcjce.5450720102"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/cjce.5450720102"}],"createdAt":"2009-03-27","modifiedAt":"2023-09-25","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1390001204567501312","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A New Graphical Method for Calculation of Mass Transfer Time in a Deep Bubble Bed"},{"@value":"A New Graphical Method for Calculation of Mass Transfer Time in a Deep Bubble Bed (SC)"},{"@language":"ja-Kana","@value":"New Graphical Method for Calculation of Mass Transfer Time in a Deep Bubble Bed SC"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204568698240","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Influence of Operating Pressure on Gas Holdup and Flow Regime Transition in a Bubble Column"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204568865152","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"The Effect of Superficial Gas Velocity and Aerated Liquid Height on the Spatial Distribution of Local Liquid-Phase Axial Dispersion Coefficients in a Bubble Column"},{"@language":"ja-Kana","@value":"Effect of Superficial Gas Velocity and Aerated Liquid Height on the Spatial Distribution of Local Liquid Phase Axial Dispersion Coefficients in a Bubble Column"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204569137664","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"New Evidence for the Mixing Length Concept in a Narrow Bubble Column Operated in the Transition Regime"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204569404288","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Flow Regime Transitions in a Bubble Column with Internals Based on a Novel Approach"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204569857408","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Flow Regime Identification in Three Multiphase Reactors Based on Kolmogorov Entropies Derived from Gauge Pressure Fluctuations"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204569860096","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Statistical Validation of the Mixing Length Concept in Bubble Columns Operated in the Transition Flow Regime"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679545066752","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A New Correction Factor for Theoretical Prediction of Mass Transfer Coefficients in Bubble Columns"},{"@language":"ja-Kana","@value":"New Correction Factor for Theoretical Prediction of Mass Transfer Coefficients in Bubble Columns"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679546333952","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A New Approach for the Prediction of Gas Holdup in Bubble Columns Operated under Various Pressures in the Homogeneous Regime"}]},{"@id":"https://cir.nii.ac.jp/crid/1390292162805434624","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Novel Hybrid Methods for Identifying the Main Transition Velocities in Various Bubble 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