Gas-Liquid Bubbly Flow in Vertical Pipes-Reference-Cited by-同舟云学术

Gas-Liquid Bubbly Flow in Vertical Pipes

Published:1996-06-01 Issue:2 Volume:118 Page:377-382
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Nakoryakov V. E.¹,Kashinsky O. N.¹,Randin V. V.¹,Timkin L. S.¹

Affiliation:

1. Russian Academy of Sciences, Siberian Branch, Institute of Thermophysics, Lavrentyev Av., 1, 630090, Novosibirsk, Russia

Abstract

Gas-liquid bubbly flow was investigated in vertical pipes for different flow conditions: fully developed turbulent downward flow in a 42.3 mm diameter pipe and upward flow in a 14.8 mm diameter pipe with liquid of elevated viscosity. Wall shear stress, local void fraction, and liquid velocity profiles, shear stress, and velocity fluctuations were measured using an electrodiffusional method. Results obtained demonstrate the existence of “universal” near-wall velocity distribution in a downward bubbly flow. The reduction of turbulent fluctuations is observed in downward flow as compared to a single-phase turbulent flow. The development of bubble-induced liquid velocity fluctuations in a “laminar” bubbly flow was studied.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/118/2/377/5515769/377_1.pdf

Reference15 articles.

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3. Clark N. N. , and FlemmerR. L. C., 1985, “Two-Phase Pressure Loss in Terms of Mixing Length Theory,” Industrial and Engineering Chemistry Fundamentals, Vol. 24, No. 4, pp. 412–423.

4. Ganchev B. G. , and PeresadkoV. G., 1985, “Hydrodynamics and Heat Transfer Processes in Descending Bubble Flows,” Journal of Engineering Physics, Vol. 49, No. 2, pp. 181–189.

5. Gorelik, R. S., Kashinsky, O. N., and Nakoryakov, V. E., 1987, “Study of Downward Bubbly Flow in a Vertical Pipe,” Journal of Applied Mechanics and Technical Physics, No. 1, pp. 69–73.

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