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Two-phase flow in minichannels / A. A. Kulkarni in Industrial & engineering chemistry research, Vol. 48 N° 17 (Septembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 17 (Septembre 2009) . - pp. 8193–8204 Titre : Two-phase flow in minichannels : hydrodynamics, pressure drop, and residence time distribution Type de document : texte imprimé Auteurs : A. A. Kulkarni, Auteur ; V. S. Kalyani, Auteur Année de publication : 2009 Article en page(s) : pp. 8193–8204 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Mini-channels  Two-phase  flow  Flow  rate  ratio Résumé : Two-phase flow in mini-channels (1 mm × 1.5 mm × 430 mm and 1.5 mm × 0.5 mm × 430 mm serpentine channel geometry) made in different materials (SS 316, PMMA and Teflon) was studied at different flow rate ratio (0.66, 1.0 and 1.56) of the two immiscible fluids. A dual syringe pump was used to pump the fluids (air−water and water-kerosene) through the channels. For characterization of the two phase flow, experiments were carried out to measure the slug size distribution and relevant hydrodynamic properties, pressure drop across a single serpentine unit (i.e., one sinusoidal unit that includes two 180° return bends connected by a straight portion of 20 mm) and also the residence time distribution of water. In all the cases, the effect of material of fabrication on the hydrodynamics was significant. Apart from flow rates and flow rate ratio of the two fluids, the slug size distribution was seen to have a strong effect of the channel orientation (vertical, horizontal) and also the flow direction (up-flow and down-flow). In the RTD studies, the response curve observed at the end of the channel was significantly different than the published literature. The reasons for such observations are discussed in detail. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801937x [article] Two-phase flow in minichannels : hydrodynamics, pressure drop, and residence time distribution [texte imprimé] / A. A. Kulkarni, Auteur ; V. S. Kalyani, Auteur . - 2009 . - pp. 8193–8204. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 17 (Septembre 2009) . - pp. 8193–8204 Mots-clés : Mini-channels  Two-phase  flow  Flow  rate  ratio Résumé : Two-phase flow in mini-channels (1 mm × 1.5 mm × 430 mm and 1.5 mm × 0.5 mm × 430 mm serpentine channel geometry) made in different materials (SS 316, PMMA and Teflon) was studied at different flow rate ratio (0.66, 1.0 and 1.56) of the two immiscible fluids. A dual syringe pump was used to pump the fluids (air−water and water-kerosene) through the channels. For characterization of the two phase flow, experiments were carried out to measure the slug size distribution and relevant hydrodynamic properties, pressure drop across a single serpentine unit (i.e., one sinusoidal unit that includes two 180° return bends connected by a straight portion of 20 mm) and also the residence time distribution of water. In all the cases, the effect of material of fabrication on the hydrodynamics was significant. Apart from flow rates and flow rate ratio of the two fluids, the slug size distribution was seen to have a strong effect of the channel orientation (vertical, horizontal) and also the flow direction (up-flow and down-flow). In the RTD studies, the response curve observed at the end of the channel was significantly different than the published literature. The reasons for such observations are discussed in detail. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801937x