The influence of fluid properties and inlet geometry on flooding in vertical and inclined tubes

Zapke, Albert; Kröger, D.G.

doi:10.1016/0301-9322(95)00076-3

Cited by 67 publications

(28 citation statements)

References 9 publications

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“…5a with Fig. 5b, it can be found that the fluctuation of water is higher than that of toluene with similar Re-numbers, which is inconsistent with the studies by Zapke and Kröger (1996), and Gu (2004b). This is possibly due to a small gas velocity near the In the process of distillations, rivulet flows cannot be avoided.…”

Section: Influence Of Liquid Flow Ratecontrasting

confidence: 65%

CFD Study on Liquid Flow Behavior on Inclined Flat Plate Focusing on Effect of Flow Rate

Yuan

Repke

et al. 2012

Engineering Applications of Computational Fluid Mechanics

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ABSTRACT:The factors affecting the separation efficiencies of structured packed columns are multi-scale, including the macroscopic variables (eg feed rate, pressure and temperature) and the microscopic liquid flow behavior and distribution. Especially in the situation in which the second liquid phase is inevitable within distillation columns, the microscopic liquid flow behavior could lead to the uncertainty of the separation efficiencies. This work mainly focuses on the investigation of the local flow behavior of a liquid phase flowing on an inclined steel plate at different situations. On one hand, a three-dimensional CFD model based on the VOF model is developed with the commercial CFD package, FLUENT 6.3. On the other hand, the results of the experimental study are adopted to validate partially the model. Within the developed model, the influences of the liquid and gas flow rates are studied with respect to the specific wetted area, the thickness profile of film and rivulet flows as well as the average velocity of the liquid phase.

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Section: Influence Of Liquid Flow Ratecontrasting

confidence: 65%

CFD Study on Liquid Flow Behavior on Inclined Flat Plate Focusing on Effect of Flow Rate

Yuan

Repke

et al. 2012

Engineering Applications of Computational Fluid Mechanics

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“…It was found that flooding velocities decrease dramatically with the increase in pressure, at each of the liquid flow rates tested, and a flooding velocity of only 0.7 m/s was measured for the highest operating pressure. More recently, 14 in a study on the effect of gas density (and viscosity) on flooding, air, argon, helium, and hydrogen were used, in counter flow with water and other liquids, in a 30 mm i.d. column, operated at atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

Effect of gas density on countercurrent flow limitation in wetted wall column

Carvalho

Costa

2006

AIChE Journal

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“…や直径 30 mm での Zapke and Krӧger [8] [9]. Kusunoki [18], U-tube Kusunoki [10], SW Kusunoki [9], AW Bharathan [7] Zapke [8] Kusunoki [10] …”

mentioning

confidence: 99%

Interfacial Friction Factor for Counter-Current Gas-Liquid Flows in Vertical Pipes

Kusunoki¹,

Yamamoto²,

Murase³

et al. 2017

JAPANESE JOURNAL OF MULTIPHASE FLOW

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One-region computations with the annular flow model were done for counter-current flow limitation (CCFL) at the sharp-edged lower end of vertical pipes to evaluate effects of diameters and fluid properties on CCFL characteristics. CCFL characteristics computed with several correlations for interfacial friction factors were compared with CCFL data and the correlation proposed by Bharathan et al. (which is a function of void fraction) was selected. The adjustment factors were obtained to give good agreement between CCFL characteristics computed with the correlation by Bharathan et al. and CCFL data and were correlated with the viscosity ratio of gas and liquid phases and the dimensionless diameter. By using the correlation for interfacial friction factors by Bharathan et al. modified with the viscosity ratio of gas and liquid phases and the dimensionless diameter, effects of diameters and fluid properties on CCFL characteristics were computed.

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The influence of fluid properties and inlet geometry on flooding in vertical and inclined tubes

Cited by 67 publications

References 9 publications

CFD Study on Liquid Flow Behavior on Inclined Flat Plate Focusing on Effect of Flow Rate

CFD Study on Liquid Flow Behavior on Inclined Flat Plate Focusing on Effect of Flow Rate

Effect of gas density on countercurrent flow limitation in wetted wall column

Interfacial Friction Factor for Counter-Current Gas-Liquid Flows in Vertical Pipes

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