Effect of tube diameter on flooding

doi:10.1016/S0301-9322(00)00045-8

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Effect of tube diameter on flooding

Journal Article•DOI•

Effect of tube diameter on flooding

M. Vijayan¹, Sreenivas Jayanti¹, A.R. Balakrishnan¹•Institutions (1)

Indian Institutes of Technology¹

01 May 2001-International Journal of Multiphase Flow (Pergamon)-Vol. 27, Iss: 5, pp 797-816

TL;DR: In this article, the effect of tube diameter on the mechanism of flooding in vertical gas-liquid countercurrent annular flow was investigated. But the results indicated that the mechanism was qualitatively different in the small and the large diameter test sections.

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About: This article is published in International Journal of Multiphase Flow.The article was published on 2001-05-01. It has received 56 citations till now.

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Citations

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Dissertation•

A Physical Investigation of Air/Water Interactions Leading to Geyser Events in Rapid Filling Pipelines

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James William Lewis

01 Jan 2011

25 citations

Journal Article•DOI•

Characteristics of solitary waves on a falling liquid film sheared by a turbulent counter-current gas flow

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N. Kofman¹, Sophie Mergui¹, Christian Ruyer-Quil², Christian Ruyer-Quil³•Institutions (3)

Centre national de la recherche scientifique¹, University of Savoy², Institut Universitaire de France³

01 Oct 2017-International Journal of Multiphase Flow

TL;DR: In this article, a falling water film is sheared by a turbulent counter-current air flow in an inclined rectangular channel and the influence of the air flow on controlled traveling waves consisting of a large wave hump preceded by capillary ripples is investigated.

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24 citations

Journal Article•DOI•

An analytical study on interfacial wave structure between the liquid film and gas core in a vertical tube

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F. Inada¹, Donald A. Drew², Richard T. Lahey²•Institutions (2)

Central Research Institute of Electric Power Industry¹, Rensselaer Polytechnic Institute²

01 Jul 2004-International Journal of Multiphase Flow

TL;DR: In this paper, a model for interfacial wave propagation for a liquid film on the wall of a vertical pipe and for a flowing gas in the central core was derived for a flat interface, and for traveling waves on the interface.

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16 citations

Journal Article•DOI•

Computational fluid dynamic simulations on liquid film behaviors at flooding in an inclined pipe

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Jianye Chen¹, Yuan Tang¹, Wei Zhang², Yuchen Wang¹, Limin Qiu¹, Xiaobin Zhang¹ - Show less +2 more•Institutions (2)

Zhejiang University¹, China Aerodynamics Research and Development Center²

24 Oct 2015-Chinese Journal of Chemical Engineering

TL;DR: In this article, the complex liquid film behaviors at flooding in an inclined pipe were investigated with computational fluid dynamic (CFD) approaches, including the dynamic wave characteristics before flooding and the transition of flow pattern when flooding happened.

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15 citations

Journal Article•DOI•

Experimental study of air–water countercurrent annular flow under post-flooding conditions

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M. Vijayan¹, Sreenivas Jayanti¹, A.R. Balakrishnan¹•Institutions (1)

Indian Institutes of Technology¹

01 Jan 2002-International Journal of Multiphase Flow

TL;DR: In this article, measurements of the pressure gradient, film thickness and down flow rate were made for a range of air and water flow rates under pre- and post-flooding conditions.

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14 citations

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References

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Journal Article•DOI•

Prediction of the slug-to-churn flow transition in vertical two-phase flow

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Sreenivas Jayanti¹, Geoffrey F. Hewitt¹•Institutions (1)

Imperial College London¹

01 Nov 1992-International Journal of Multiphase Flow

TL;DR: In this paper, an assessment of the various viewpoints on the slug-to-churn flow transition in vertical upward flow in the light of recent experimental results obtained at Harwell Laboratory is made.

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173 citations

Journal Article•DOI•

Flooding in tubes and annuli

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H.J. Richter¹•Institutions (1)

Dartmouth College¹

01 Dec 1981-International Journal of Multiphase Flow

TL;DR: In this article, a new flooding correlation is presented which solves the obvious contradiction between the Wallis correlation and the study by Pushkina and Sorokin concerning the scaling question at zero penetration of liquid.

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146 citations

"Effect of tube diameter on flooding..." refers methods in this paper

...Richter (1981) and Jayanti et al. (1996) suggested, based on dierent arguments, that the Wallis-type correlation would work well in small diameter tubes and the Kutateladze-type in large diameter tubes....
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Book Chapter•DOI•

A critical review of the flooding literature

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S. George Bankoff¹, Sang Chun Lee¹•Institutions (1)

Northwestern University¹

01 Jan 1986-Multiphase Science and Technology

TL;DR: In the absence of electromagnetic force fields, thermocapillary effects or concentration-capillary effects, countercurrent flow can be sustained only as a result of the difference in the gravitational force per unit volume on the gas and on the liquid as discussed by the authors.

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Abstract: Countercurrent flow of a gas and a liquid in direct contact with each other is, of necessity, gravity dominated. That is, in the absence of electromagnetic force fields, thermocapillary effects, or concentration-capillary effects, countercurrent flow can be sustained only as a result of the difference in the gravitational force per unit volume on the gas and on the liquid. If the gas and liquid are simultaneously introduced into a porous medium or into a vertical or inclined pipe, the gas tends to rise relative to the liquid. If conditions allow complete separation, it is possible to maintain steady countercurrent flow in which the liquid discharges at the bottom while the gas flows out from the top. The countercurrent flow is opposed by interfacial friction between the phases, which always seems to increase monotonically as the relative countercurrent mean velocity of the phases increases. Hence, for a given geometry and liquid-gas pair, there is a maximum relative velocity that can be sustained in countercurrent flow. This point is known as the onset of flooding. Further increases in gas or liquid input ratas result in only partial delivery of the liquid out of the bottom. Eventually, if the gas velocity becomes sufficiently high, none of the liquid is delivered at the bottom, and fully cocurrent upward flow is established. If the liquid is being introduced from an upper plenum, none will penetrate into the pipe or porous medium when this second critical gas velocity is reached.

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117 citations

Journal Article•DOI•

Air-water countercurrent annular flow

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D. Bharathan, Graham B. Wallis¹•Institutions (1)

Dartmouth College¹

01 Sep 1979-International Journal of Multiphase Flow

TL;DR: In this paper, the authors investigated the effect of tube end geometries on measured countercurrent fluxes, liquid fraction, and pressure gradients, and analogies between countercurrent gas-liquid flow and other more familiar flows in internal geometry are indicated.

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108 citations

Journal Article•DOI•

Flooding and churn flow in vertical pipes

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A.H. Govan, Geoffrey F. Hewitt, H.J. Richter, A. Scott

01 Jan 1991-International Journal of Multiphase Flow

TL;DR: In this paper, a 32 mm dia vertical pipe with various forms of liquid outlet, namely a porous wall, a tapered outlet, and a square-edged outlet, was used to investigate the effect of churn flow on the penetration rate.

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103 citations

"Effect of tube diameter on flooding..." refers background or methods in this paper

...For example, McQuillan et al. (1985) and Govan et al. (1991) , among others, used slight depressurization , of the order of 0.05 bar, to induce ¯ooding while others such as Dukler and Smith (1982) and Zabaras and Dukler (1988) induced ¯ooding by gradually increasing the air ¯ow rate....
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...It is generally believed (Suzuki and Ueda, 1977; McQuillan et al., 1985; Govan et al., 1991) that ¯ooding occurs when large waves, formed near the liquid outlet, are swept upwards by the gas phase....
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...In some cases, this discrepancy can be attributed to the inlet and outlet conditions for the gas and liquid phases (Govan et al., 1991), however, the experiments of International Journal of Multiphase Flow 27 (2001) 797±816 www.elsevier.com/locate/ijmul¯ow Biage (1989) showed that even with smooth…...
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...The ®rst mechanism, namely, upward transport of ring-type waves, has been observed, among others, by Suzuki and Ueda (1977), McQuillan et al. (1985) and Govan et al. (1991)....
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...As a modi®cation to (ii) above, Govan et al. (1991) de®ned ¯ooding as the point at which liquid appeared (and not necessarily carried away by the gas stream) above the liquid injection point....
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