𝔖 Bobbio Scriptorium
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Two-phase (gas/liquid) flow phenomena—II: Liquid entrainment

✍ Scribed by G.H. Anderson; B.G. Mantzouranis


Publisher
Elsevier Science
Year
1960
Tongue
English
Weight
695 KB
Volume
12
Category
Article
ISSN
0009-2509

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✦ Synopsis


Measurements have been made of the entrainment of water droplets in an air-stream when air and water flow concurrently up a vertical glass tube of O&n. diameter. It was found that the mass flow of entrained liquid varied with the air rate to the power 2% and the liquid rate to the power 1.5 when annular flow conditions prevailed. The effect of entrainment on the calculation of the thickness of the annular liquid film by the method given in Part I is discussed. RBsum&Les autuers ont fait des mesures sur l'entrainement de gouttelettes d'eau par un &oulement d'air quand l'eau et l'air se dbplacent dans le mCme sens et vers le haut dans un tube de verre vertical de 0,5 in. de diamgtre. 11s ont trouvd que 1'Ccoulement massique du liquidc entrain6 varie avec la vitesse de l'air B la puissance 2,6 et la vitesse du liquide ir la puissance 1,s quand les conditions d'tcoulement annulaire prevalent. L'effet de l'entrainment sur le calcul de 1'Cpaisseur du flhn liquide annulaire par la m6thode don&e partie I est discutC. Zusammenfassung-Es wurden Messungen durchgefiihrt ilber die Mitnahme von Wassertropfen durch einen Luftatrom, wobei Luft und Wasser im Gleichstrom aufwsirts durch ein senkrechtes Glasrohr mit 0,5" Durchmesser sttimten. Dabei wurde gefunden, dass der Mengendurchsatz der eingegebenen Fliissigkeit sich mit der 2,6ten Potenz der Luftgeachwindigkeit und dass sich die Fltisigkeitsgeschwindigkeit mit der 1,5ten Potenz iindert, wenn die Bedingungen einer Ringstriimung herrschen. Der Einfluss der Mitnahme auf die Berechnung der Dicke des Riq-Fliissigkeits-Films mit Hilfe der in Teil I angegebcnen Methode wird diskutiert.


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