Film boiling on vertical plates and spheres

Part 1 of this work presents a closed analytical solution for mixed-convection film boiling on vertical walls. Heat transfer coefficients predicted by the proposed model and some experimental data are compared. All data predicted are inside the ±10% error band, with mean averaged error being below 4...

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Bibliographic Details
Published inExperimental thermal and fluid science Vol. 18; no. 2; pp. 97 - 115
Main Author Kolev, N.I.
Format Journal Article
LanguageEnglish
Published New York, NY Elsevier Inc 01.10.1998
Elsevier Science
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Film boiling
Fundamental areas of phenomenology (including applications)
Heat flow in porous media
Heat transfer
Heat transfer in inhomogeneous media, in porous media, and through interfaces
Physics
Plate
Sphere
Steam explosion
Theoretical studies. Data and constants. Metering
Sphere
Film boiling
Steam explosion
Heat transfer
Plate
Combined convection
Liquid vapor interface
Digital simulation
Disturbances
Modelling
Film cooling
Spheres
Heat transfer coefficient
Layer thickness
Vertical plate
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Summary:Part 1 of this work presents a closed analytical solution for mixed-convection film boiling on vertical walls. Heat transfer coefficients predicted by the proposed model and some experimental data are compared. All data predicted are inside the ±10% error band, with mean averaged error being below 4% (using slightly modified analytical solution). The solution obtained is recommended for practical applications. The method presented here is used in Part 2 as a guideline for developing a model for film boiling on spheres. The new semi-empirical film boiling model for spheres used in IVA4 computer code is compared with the experimental data base obtained by Liu and Theofanous. The data are predicted within ±30% error band.
ISSN:0894-1777
1879-2286
DOI:10.1016/S0894-1777(98)10021-3