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Effects of orifice angle and surface roughness on the bubbling - to - jetting regime transition in a bubble column / Carlos Irrgang in Industrial & engineering chemistry research, Vol. 51 N° 11 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4445-4451 Titre : Effects of orifice angle and surface roughness on the bubbling - to - jetting regime transition in a bubble column Type de document : texte imprimé Auteurs : Carlos Irrgang, Auteur ; Olaf Hinrichsen, Auteur ; Raymond Lau, Auteur Année de publication : 2012 Article en page(s) : pp. 4445-4451 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Bubble  column  Bubbling  Roughness Résumé : Submerged gas injection into liquids is a widely applied processing technique. The main objective of the current study was to determine the effects of orifice angle and orifice surface roughness on the bubbling-to-jetting regime transition in a bubble column. The bubbling behaviors at single-orifice distributors were investigated over a wide range of orifice gas velocities. The pressure fluctuations in the plenum and high-speed image sequence of the bubble emerging process at the orifice were recorded in experiments. Both orifice angle and orifice surface roughness were found to have significant effects on the regime-transition velocity between the bubbling and jetting regimes. Models were also developed by incorporating those available in the literature with the experimental results obtained in the current study. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25655653 [article] Effects of orifice angle and surface roughness on the bubbling - to - jetting regime transition in a bubble column [texte imprimé] / Carlos Irrgang, Auteur ; Olaf Hinrichsen, Auteur ; Raymond Lau, Auteur . - 2012 . - pp. 4445-4451. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4445-4451 Mots-clés : Bubble  column  Bubbling  Roughness Résumé : Submerged gas injection into liquids is a widely applied processing technique. The main objective of the current study was to determine the effects of orifice angle and orifice surface roughness on the bubbling-to-jetting regime transition in a bubble column. The bubbling behaviors at single-orifice distributors were investigated over a wide range of orifice gas velocities. The pressure fluctuations in the plenum and high-speed image sequence of the bubble emerging process at the orifice were recorded in experiments. Both orifice angle and orifice surface roughness were found to have significant effects on the regime-transition velocity between the bubbling and jetting regimes. Models were also developed by incorporating those available in the literature with the experimental results obtained in the current study. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25655653