Onset of Marangoni convection in variable-viscosity fluid layer subject to uniform heat flux from below

2008 ◽  
Vol 35 (8) ◽  
pp. 948-956 ◽  
Author(s):  
S. Awang Kechil ◽  
I. Hashim
Keyword(s):  
Heat Flux ◽  
Marangoni Convection ◽  
Variable Viscosity ◽  
Fluid Layer ◽  
Uniform Heat Flux ◽  
Uniform Heat ◽  
Viscosity Fluid ◽  
Variable Viscosity Fluid

A Nondimensional Analysis of Boiling Dry a Vertical Channel with a Uniform Heat Flux

1981 ◽  
Vol 103 (4) ◽  
pp. 667-672 ◽  
Author(s):  
K. H. Sun ◽  
R. B. Duffey ◽  
C. Lin
Keyword(s):  
Heat Flux ◽  
Nuclear Power ◽  
Closed Form Solution ◽  
Vertical Channel ◽  
Form Solution ◽  
Uniform Heat Flux ◽  
Two Phase ◽  
Drift Flux ◽  
Rod Bundle ◽  
Uniform Heat

A thermal-hydraulic model has been developed for describing the phenomenon of hydrodynamically-controlled dryout, or the boil-off phenomenon, in a vertical channel with a spatially-averaged or uniform heat flux. The use of the drift flux correlation for the void fraction profile, along with mass and energy balances for the system, leads to a dimensionless closed-form solution for the predictions of two-phase mixture levels and collapsed liquid levels. The physical significance of the governing dimensionless parameters are discussed. Comparisons with data from single-tube experiments, a 3 × 3 rod bundle experiment, and the Three Mile Island nuclear power plant show good agreement.

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