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TECHNICAL PAPERS

An Experimentally Validated Model for Two-Phase Pressure Drop in the Intermittent Flow Regime for Circular Microchannels

[+] Author and Article Information
S. Garimella, J. D. Killion, J. W. Coleman

Department of Mechanical Engineering, Iowa State University, 2030 H. M. Black Engineering Building, Ames, IA 50011

J. Fluids Eng 124(1), 205-214 (Sep 12, 2001) (10 pages) doi:10.1115/1.1428327 History: Received January 26, 2001; Revised September 12, 2001
Copyright © 2002 by ASME
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References

Figures

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Tubes investigated in the present study
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Single-phase pressure drop validation (tube C30)
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Validation of contraction/expansion contributions using near-zero length tube
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Delineation of acceleration/deceleration contributions, tube C30, 600 kg/m2 -s
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Intermittent flow regime boundaries for tubes under consideration
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Cross section of assumed flow pattern for model unit cell
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Contribution of each pressure drop mechanism to total pressure drop for each test point
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Number of unit cells per meter derived from measured data and model as a function of slug Reynolds number, comparison with curve fit
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Comparison of total predicted pressure drop with measurements
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Predicted effect of hydraulic diameter, mass flux, and quality on pressure drop for constant L/Dh

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