The past efforts in applying linear Taylor instability theory to the prediction of heat transfer during film boiling on a horizontal surface have suffered from the fact that empirical correlations must be used to define the shape of vapor-liquid interfaces and to determine the transport of mass and heat across these interfaces. The objective of this study is to clarify the physics of film boiling and to predict heat transfer coefficients through complete numerical simulation of the evolving interface between superposed layers of immiscible fluids. A coordinate transformation technique supplemented by a numerical grid generation method and a second-order projection method are combined to solve for the flow and temperature fields associated with an evolving interface. From the numerical simulation, the film thickness and, in turn, the heat transfer coefficient are found to vary both spatially and temporally. Increased wall superheat not only thickens the vapor film in the valley but also enlarges the vapor bulge. The effect of increased system pressure is to slow down the growth of the interface.
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Research Papers
Numerical Simulation of Saturated Film Boiling on a Horizontal Surface
G. Son,
G. Son
Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095
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V. K. Dhir
V. K. Dhir
Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095
e-mail: vdhir@seas.ucla.edu
Search for other works by this author on:
G. Son
Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095
V. K. Dhir
Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095
e-mail: vdhir@seas.ucla.edu
J. Heat Transfer. Aug 1997, 119(3): 525-533 (9 pages)
Published Online: August 1, 1997
Article history
Received:
September 3, 1996
Revised:
February 7, 1997
Online:
December 5, 2007
Citation
Son, G., and Dhir, V. K. (August 1, 1997). "Numerical Simulation of Saturated Film Boiling on a Horizontal Surface." ASME. J. Heat Transfer. August 1997; 119(3): 525–533. https://doi.org/10.1115/1.2824132
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