1986
DOI: 10.1002/aic.690321011
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Cocurrent downflow of air and water in a two‐dimensional packed column

Abstract: Multiple hydrodynamic states were observed during cocurrent downflow of air and water under trickling flow conditions in a packed bed of rectangular cross section. Although the multiplicity was exhibited by both pressure gradient and liquid holdup, the pressure gradient showed the largest variations at identical conditions. The multiplicity is interpreted as being due to the liquid flowing in two different modes, namely, film flow and rivulet flow.The characteristics of pulsing flow in a packed bed of rectangu… Show more

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Cited by 96 publications
(115 citation statements)
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“…A similar shift is observed when the liquid viscosity increases. The same qualitative results, under atmospheric conditions, have been reported by Chou et al (1977), Tosun (1983), Sai and Varma (1988), and Christensen et al (1986).…”
Section: Transition Between Trickle and Pulse Flowsupporting
confidence: 77%
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“…A similar shift is observed when the liquid viscosity increases. The same qualitative results, under atmospheric conditions, have been reported by Chou et al (1977), Tosun (1983), Sai and Varma (1988), and Christensen et al (1986).…”
Section: Transition Between Trickle and Pulse Flowsupporting
confidence: 77%
“…The various operating procedures we used did not influence the transition. The absence of hysteresis for the transition has also been reported by Christensen et al (1986). This is in contrast to the findings of Levec et al (1986).…”
Section: Transition Between Trickle and Pulse Flowcontrasting
confidence: 56%
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“…La vitesse moyenne du liquide dans le bouchon est donc supérieure à celle dans la poche gazeuse. La vitesse du bouchon est déterminée par la vitesse interstitielle du gaz tandis que la fréquence de passage des bouchons dépend de la vitesse superficielle du liquide en excès par rapport à la valeur critique caractérisant la transition (Blok et Drinkenburg, 1982 ;Christensen et al, 1986).…”
Section: Phénoménologie Des Régimes Hydrodynamiquesunclassified