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Turbulent and laminar mixings in an unbaffled agitated vessel with an unsteadily angularly oscillating impeller / Masanori Yoshida in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1665–1672 Titre : Turbulent and laminar mixings in an unbaffled agitated vessel with an unsteadily angularly oscillating impeller Type de document : texte imprimé Auteurs : Masanori Yoshida, Auteur ; Yasuyuki Nagai, Auteur ; Kazuaki Yamagiwa, Auteur Année de publication : 2009 Article en page(s) : p. 1665–1672 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Oscillation  Vessel  agitated  Impeller  power Résumé : For an unbaffled agitated vessel with an angularly oscillating impeller whose rotation continues while periodically reversing its direction at a set angle, the progress of mixing of Newtonian liquid phase was studied experimentally in relation to the impeller power characteristics. Results obtained for the angular oscillation mode of a disk turbine impeller with six flat blades with different amplitudes (Strouhal number) were compared to those obtained for the unidirectional rotation mode of the impeller of identical design. Using an angularly oscillating impeller, turbulent and laminar mixings were effective, respectively, with larger and smaller amplitudes. The mixing characteristics for turbulent and laminar flow regions were discussed on the basis of the flow field features, which the impeller power number reflected. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801502q [article] Turbulent and laminar mixings in an unbaffled agitated vessel with an unsteadily angularly oscillating impeller [texte imprimé] / Masanori Yoshida, Auteur ; Yasuyuki Nagai, Auteur ; Kazuaki Yamagiwa, Auteur . - 2009 . - p. 1665–1672. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1665–1672 Mots-clés : Oscillation  Vessel  agitated  Impeller  power Résumé : For an unbaffled agitated vessel with an angularly oscillating impeller whose rotation continues while periodically reversing its direction at a set angle, the progress of mixing of Newtonian liquid phase was studied experimentally in relation to the impeller power characteristics. Results obtained for the angular oscillation mode of a disk turbine impeller with six flat blades with different amplitudes (Strouhal number) were compared to those obtained for the unidirectional rotation mode of the impeller of identical design. Using an angularly oscillating impeller, turbulent and laminar mixings were effective, respectively, with larger and smaller amplitudes. The mixing characteristics for turbulent and laminar flow regions were discussed on the basis of the flow field features, which the impeller power number reflected. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801502q