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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Print: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i4-6.200
pages 677-688

An Analytical Study on the Behavior of a Bubble in a Micro Two-Phase Closed Thermosyphon

Yong-Pyo Lee
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Taejon, Korea
Young-Soo Lee
Waste Heat Utilization Research Team, Korea Institute of Energy Research, Taejon 305-343, KOREA
Y. P. Lee
Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario, Canada, KIN 6N5

ABSTRACT

The rise of a large gas bubble or slug in a micro two-phase closed thermosyphon with a thin wire insert has been analyzed by the potential flow theory. The effect of the interfacial surface tension is explicitly accounted by application of the Kelvin-Laplace equation and solved for the bubble shape. The solution is expressed in terms of the Stokes stream function which consists of infinite series of Bessel functions.
The conditions of the bubble movement in a micro two-phase closed thermosyphon were theoretically ascertained.


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