Forced convective, nonequilibrium post-CHF heat transfer experiment: description, data analysis and correlation comparison
Forced convective, nonequilibrium post-CHF heat transfer data (766 points) have been obtained at high pressure and low mass flux ranges not previously tested. The data are unique in that the superheated vapor temperature was measured at multiple elevations allowing the direct calculation of vapor generation rates. The data are useful for verification or development of nonequilibrium heat and mass transfer models. Statistical analyses of the data indicated the importance of flow rate represented by the vapor Reynolds number to the 0.8 power. Three additional parameters, a nonequilibrium term, the quench front quality and the distance from the quench front were shown to be statistically significant in fitting the data. The Prandtl number was also included in the fit but was the least significant parameter. Current film boiling heat transfer correlations do not predict the data well. The Dougall-Rohsenow equilibrium correlation is the only one investigated that reasonably predicts the measured wall heat fluxes. Current vapor generation rate models do not adequately predict the measured vapor generation rates.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA); Lehigh Univ., Bethlehem, PA (USA); Yankee Atomic Electric Co., Westboro, MA (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6922266
- Report Number(s):
- EGG-M-06484; CONF-8404146-2; ON: DE84012615
- Country of Publication:
- United States
- Language:
- English
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