Recent experimental data dealing with gas-liquid two-phase flow regimes and their transitions in microchannels with circular and near-circular cross-sections are reviewed and compared. It is shown that, for microchannels with hydraulic diameters close to 1 mm, the available data are in good agreement. These data are used as the basis for the development of a simple Weber number-based flow regime map that divides the entire flow map into four zones: a surface tension dominated zone including bubbly and plug flow patterns; an inertia dominated zone representing the annular flow regime; a dispersed/churn flow zone; and a transition zone that consists of other intermittent flow patterns. Comparison is als o made with the limited available data representing channels with slightly larger hydraulic diameters or different cross-sectional geometries, and the effects of channel cross-sectional geometry and size are examined and discussed. The areas in need of further systematic experimental investigation are identified.
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ASME 2002 International Mechanical Engineering Congress and Exposition
November 17–22, 2002
New Orleans, Louisiana, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-3638-X
PROCEEDINGS PAPER
Gas-Liquid Two-Phase Flow Regimes in Microchannels
M. K. Akbar,
M. K. Akbar
Georgia Institute of Technology, Atlanta, GA
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D. A. Plummer,
D. A. Plummer
Georgia Institute of Technology, Atlanta, GA
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S. M. Ghiaasiaan
S. M. Ghiaasiaan
Georgia Institute of Technology, Atlanta, GA
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M. K. Akbar
Georgia Institute of Technology, Atlanta, GA
D. A. Plummer
Georgia Institute of Technology, Atlanta, GA
S. M. Ghiaasiaan
Georgia Institute of Technology, Atlanta, GA
Paper No:
IMECE2002-39555, pp. 527-534; 8 pages
Published Online:
June 3, 2008
Citation
Akbar, MK, Plummer, DA, & Ghiaasiaan, SM. "Gas-Liquid Two-Phase Flow Regimes in Microchannels." Proceedings of the ASME 2002 International Mechanical Engineering Congress and Exposition. Heat Transfer, Volume 7. New Orleans, Louisiana, USA. November 17–22, 2002. pp. 527-534. ASME. https://doi.org/10.1115/IMECE2002-39555
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