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An analytical model for predicting dryout point in bilaterally heated vertical narrow annuli

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An analytical model for predicting dryout point in bilaterally heated vertical narrow annuli

AYE Myint，
TIAN Wen-Xi，
JIA Dou-Nan，
LI Zhi-Hui，
LI Hao
Nuclear Science and TechniquesVol.16, No.1pp.59-64Published in print 01 Feb 2005
CLC：TL33,O359
47500

Based on the droplet-diffusion model by Kirillov and Smogalev (1969, 1972), a new analytical model of dryout point prediction in the steam-water flow for bilaterally and uniformly heated narrow annular gap was developed. Comparisons of the present model predictions with experimental results indicated that a good agreement in accuracy for the experimental parametric range (pressure from 0.8 to 3.5 MPa, mass flux of 60.39 to 135.6 kg•m-2•s-1 and heat flux of 5 to 50 kW•m-2). Prediction of dryout point was experimentally investigated with deionized water upflowing through narrow annular channel with 1.0 mm and 1.5 mm gap heated by AC power supply.

Narrow annuliBilaterally heatingDryout pointCritical qualityAnnular flow
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Nuclear Science and Techniques
Nuclear Science and Techniques