FILM BOILING HEAT TRANSFER FROM A HORIZONTAL SURFACE AS AN OPTlMAL BOUNDARY VALUE PROCESS

2019 ◽  
Author(s):  
Thomas D. Hamill ◽  
Kenneth J. Baumeister
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Boundary Value ◽  
Horizontal Surface ◽  
Film Boiling

Magnetohydrodynamic Correction in Film Boiling Heat Transfer on Liquid Metal in Presence of an Ideal Magnetic Field With Particular Reference to Fusion Reactor Project

2009 ◽  
Vol 131 (12) ◽  
Author(s):  
F. J. Arias
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Liquid Metal ◽  
High Magnetic Field ◽  
Boiling Heat Transfer ◽  
Fusion Reactor ◽  
Horizontal Surface ◽  
Film Boiling ◽  
Experimental Measurements

The author proposed a magnetohydrodynamic correction from a horizontal surface in liquid-metal in the presence of an ideal magnetic field. The theoretical correction agrees qualitatively with the available experimental measurements made on mercury in a high magnetic field where transition/film boiling is expected.

Film-Boiling Heat Transfer From a Horizontal Surface

1961 ◽  
Vol 83 (3) ◽  
pp. 351-356 ◽  
Author(s):  
P. J. Berenson
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Boiling Heat Transfer ◽  
Hydrodynamic Instability ◽  
Geometrical Model ◽  
Horizontal Surface ◽  
Film Boiling ◽  
Experimental Measurements ◽  
Minimum Heat ◽  
The Heat Transfer Coefficient

Taylor-Helmholtz Hydrodynamic Instability and its significance with regard to film boiling heat transfer from a horizontal surface is discussed. It is shown that near the minimum film-boiling heat flux, the bubble spacing and growth rate is determined by Taylor Instability neglecting the effect of fluid depth and viscosity. Utilizing a simplified geometrical model, an analytical expression for the heat-transfer coefficient near the minimum in film pool boiling from a horizontal surface was derived. Combining this equation with the available correlation for the minimum heat flux yields an analytical equation for the temperature difference at the minimum, which defines the location of the minimum point. The above equations agree with the available experimental measurements made on n-pentane and carbon tetrachloride within ±10 per cent.

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