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COMPARISON OF CFD AND EMPIRICAL MODELS FOR PREDICTING WALL TEMPERATURE AT SUPERCRITICAL CONDITIONS OF WATER
Author(s) -
D. Santhosh Kumar,
Sushant Anand,
S. Suresh,
R. Dhanuskodi
Publication year - 2020
Publication title -
frontiers in heat and mass transfer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 18
ISSN - 2151-8629
DOI - 10.5098/hmt.14.8
Subject(s) - supercritical fluid , thermal fluids , computational fluid dynamics , thermal , frontier , thermodynamics , environmental science , petroleum engineering , materials science , aerospace engineering , engineering , political science , physics , law , thermal resistance
The present work investigates the wall temperature prediction at supercritical pressure of water by CFD and compares the prediction of CFD and that of 11 empirical correlations available in literature. Supercritical-water heat transfer experimental data, covering a mass flux range of 400-1500 kg/m2s, heat flux range of 150-1000 kW/m2, at pressure 241 bar and diameter 10 mm tube, were obtained from literature. CFD simulations have been carried out for those operating conditions and compared with experimental data. Around 362 experimental wall temperature data of both heat transfer enhancement and heat transfer deterioration region have been taken for comparison. A visual Basic program has also been developed to predict wall temperature for the selected empirical correlations and compared with those of 362 experimental data. Ranking based on the deviation with experimental data is also listed.

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