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Research Papers: Multiphase Flows

Distributions of Pressure, Velocity, and Void Fraction for One-Dimensional Gas-Liquid Bubbly Flow in Horizontal Pipes

[+] Author and Article Information
Phu D. Tran

 Maunsell Australia, Level 11, 44 Market Street, Sydney, 2000, Australiaphu.tran@maunsell.com

J. Fluids Eng 130(9), 091302 (Aug 12, 2008) (9 pages) doi:10.1115/1.2953226 History: Received December 03, 2006; Revised May 06, 2008; Published August 12, 2008

A homogeneous model for prediction of the longitudinal distributions of pressure, velocity, and void fraction for two-phase bubbly flow in horizontal pipes is presented. The mixture flow is described by a system of two nondimensional ordinary differential equations that can be integrated numerically to yield the distributions of the flow variables along the pipe. The viscosity of the two-phase mixture is assumed to vary with the void fraction according to a polynomial form. Experimental data were obtained for a range of air-water bubbly flow in a horizontal pipe. Prediction of pressure distributions along the pipe compares favorably with experimental data, while prediction of void fraction distributions can be achieved with moderate accuracy.

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Copyright © 2008 by American Society of Mechanical Engineers
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References

Figures

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Figure 2

Limiting values of void fraction and pressure ratio

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Figure 3

Variation of mixture viscosity with void fraction

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Figure 4

Schematic diagram of the experimental setup

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Figure 5

Computed pressure distributions

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Figure 6

Computed velocity distributions

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Figure 7

Computed void fraction distributions

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Figure 8

Comparison of the predicted pressure drops with author’s experimental data

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Figure 9

Comparison of the predicted pressure distribution with author’s experimental data

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Figure 10

Comparison of the predicted pressure drops with Kopalinsky’s experimental data

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Figure 11

Comparison of the predicted pressure drops with Herringe’s experimental data

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Figure 12

Comparison of the predicted void fractions with Herringe’s experimental data

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