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TECHNICAL PAPERS: Evaporative Boiling and Condensation

Planar Simulation of Bubble Growth in Film Boiling in Near-Critical Water Using a Variant of the VOF Method

[+] Author and Article Information
D. K. Agarwal, G. Biswas

Department of Mechanical Engineering, Indian Institute of Technology, Kanpur-208016, India

S. W. J. Welch

Department of Mechanical Engineering, University of Colorado, Denver, Colorado-80217, USA

F. Durst

Institute of Fluid Mechanics, LSTM, University of Erlangen-Nuremberg, Cauer Str. 4, D-91058 Erlangen, Germany

J. Heat Transfer 126(3), 329-338 (Jun 16, 2004) (10 pages) doi:10.1115/1.1737779 History: Received January 02, 2003; Revised March 05, 2004; Online June 16, 2004
Copyright © 2004 by ASME
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References

Figures

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The domain for the simulation of film boiling
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A typical two phase cell with piecewise linear interface
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Schematic of cell flux calculation
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Bubble interface for three different grid resolutions
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Bubble interface for two different time steps. Grid resolution is kept as 180×360.
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Bubble release from the constant wall temperature surface for two complete cycles
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Fluctuation of space averaged heat flux on the wall surface with constant fluid thermal properties
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Fluctuation of space averaged heat flux on the wall surface with variable fluid thermal properties
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Fluctuation of liquid-vapor interface heat flux with time
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Variation of fractional vapor volume with time for constant and variable thermal properties
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Isotherms for a superheat of Δθ=15°C in the vapor over the computational domain at time instants 0.375 s and 0.625 s, respectively. In (b) contour levels are spaced at a temperature difference of 1°C for a range between 647–658°C.
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Isotherms for a superheat of Δθ=15°C in an enlarged region of Fig. 11(a) near the location of minimum film thickness
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Variation of peak heat flux value with the reciprocal of minimum film thickness at various time instants
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Velocity vectors for a superheat of Δθ=15° at time=0.375 s
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Velocity vectors for a superheat of Δθ=15° at time=0.625 s
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Streamlines at time=0.375 s
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Streamlines at time=0.625 s
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Variation of heat flux on the wall surface at various time instants before bubble release on right symmetric boundary
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Variation of heat flux on wall surface at time instants after the bubble release on right symmetric boundary
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Nusselt number variation with time (with constant thermal properties)
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Nusselt number variation with time (with variable thermal properties)

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