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TECHNICAL PAPERS: Evaporation, Boiling, and Condensation

Numerical Simulation of Bubble Merger Process on a Single Nucleation Site During Pool Nucleate Boiling

[+] Author and Article Information
G. Son

Department of Mechanical Engineering, Sogang University, Seoul, 121-742, Korea

N. Ramanujapu, V. K. Dhir

Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095

J. Heat Transfer 124(1), 51-62 (Aug 16, 2001) (12 pages) doi:10.1115/1.1420713 History: Received February 15, 2001; Revised August 16, 2001
Copyright © 2002 by ASME
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References

Figures

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Macro and micro regions used in numerical simulation
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Schematic of the experimental apparatus
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Bubble growth pattern for ΔT=10 K and τw=4.8 msec
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Flow fields during bubble growth and detachment for ΔT=10 K and τw=4.8 msec
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Temperature fields with temperature interval of 1 K for ΔT=10 K and τw=4.8 msec
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Bubble growth and merger pattern for ΔT=10 K and τw=2.4 msec
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Bubble growth and dmerger pattern for ΔT=10 K and τw=1.28 msec
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Flow fields during bubble growth, detachment and merger for ΔT=10 K and τw=1.28 msec
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Temperature fields with temperature interval of 1 K for ΔT=10 K and τw=1.28 msec
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Variation of Nusselt number with time for ΔT=10 K and three different waiting periods: (a) τw=4.8 msec; (b) τw=2.4 msec; and (c) τw=1.28 msec
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Dependence of vapor removal rate on the wall superheat
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Bubble growth and merger pattern for ΔT=15 K and τw=1.28 msec
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Comparison of bubble merger patterns on a single nucleation site for ΔT=10 K obtained from (a) numerical simulation with τw=1.28 msec and (b) experiment
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Variation of bubble diameter with time for ΔT=10 K and three different waiting periods: (a) τw=4.8 msec; (b) τw=2.4 msec; and (c) τw=1.28 msec

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