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TECHNICAL PAPERS

Bubble Analogy and Stabilization of Core-Annular Flow

[+] Author and Article Information
Antonio C. Bannwart

Department of Petroleum Engineering, State University of Campinas, Campinas, SP, Brazil e-mail: bannwart@fem.unicamp.br

J. Energy Resour. Technol 123(2), 127-132 (Dec 11, 2000) (6 pages) doi:10.1115/1.1367272 History: Received October 28, 1999; Revised December 11, 2000
Copyright © 2001 by ASME
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References

Bannwart,  A. C., 1999, “A simple Model for Pressure Drop in Horizontal Core Annular Flow,” J. Brazilian Society of Mechanical Sciences, 21, No. 2, pp. 233–244.
Joseph,  D. D., Renardy,  M., and Renardy,  Y., 1984, “Instability of the Flow of Two Immiscible Liquids With Different Viscosities in a Pipe,” J. Fluid Mech., 141, pp. 309–317.
Ooms,  G., Segal,  A., van der Wees,  A. J., Meerhoff,  R., and Oliemans,  R. V. A., 1984, “A Theoretical Model for Core-Annular Flow of a Very Viscous Oil Core and a Water Annulus Through a Horizontal Pipe,” Int. J. Multiphase Flow, 10, pp. 41–60.
Feng,  J., Huang,  P. Y., and Joseph,  D. D., 1995, “Dynamic Simulation of the Motion of Capsules in Pipelines,” J. Fluid Mech., 286, pp. 201–227.
Bannwart,  A. C., 1998, “Wavespeed and Volumetric Fraction in Core-Annular Flow,” Int. J. Multiphase Flow, 24, pp. 961–974.
Bannwart, A. C. 1999, “The Role of Surface Tension in Core-Annular Flow,” 2nd International Symposium on Two-Phase Flow Modeling and Experimentation—ISTP’99, Vol. 2, Pisa, Italy, pp. 1297–1302.
Clift, R., Grace, J. R., and Weber, M. E., 1978, Bubbles, Drops and Particles. Academic Press, New York, NY.
Brauner, N., and Moalem Maron, D., 1999, “Classification of Liquid-Liquid Two-Phase Flow Systems and the Prediction of Flow Pattern Maps,” 2nd International Symposium on Two-Phase Flow Modeling and Experimentation—ISTP’99, Vol. 2, Pisa, Italy, pp. 747–754.

Figures

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Possible annulus flow relative to the core
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Peripheral flow and coordinate system
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Schematic of the cross section of the core
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Core shapes for negative Eötvos numbers. For Eo=0 the core is a circle; then it deforms progressively as Eo increases. The horizontal segments represent Eq. (18).
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Eötvos number Eo as function of the parameter E*
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Typical top and side views of a core-annular flow
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Aspect ratio as function of the Eötvos number. The points stand for the data of Table 1.

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