Open Access

ARTICLE

COMPARISON OF CFD AND EMPIRICAL MODELS FOR PREDICTING WALL TEMPERATURE AT SUPERCRITICAL CONDITIONS OF WATER

by

a Department of Mechanical Engineering, National Institute of Technology, Trichy, Tamilnadu, 620015, India
b Research & Development Department, Bharath Heavy Elecricals, Ltd., Trichy, Tamilnadu. 620014, India

* Corresponding Author: Email:

Frontiers in Heat and Mass Transfer 2020, 14, 1-9. https://doi.org/10.5098/hmt.14.8

Abstract

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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Keywords

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