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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v39.i7.30
pages 587-596

Modelling of the Dryout Process in an Annular Flow

Dariusz Mikielewicz
Gdansk University of Technology, Faculty of Mechanical Engineering, 80-233 Gdansk, ul. Narutowicza 11/12, Poland
Jaroslaw Mikielewicz
Institute of Fluid-Flow Machinery, Polish Academy of Science, 80-952 Gdansk, ul. Fiszera 14, Poland
Jan Wajs
The Szewalski Institute of Fluid-Flow Machinery PAS, ul. Fiszera 14, 80-231 Gdansk; Gdansk University of Technology, Faculty of Mechanical Engineering, 80-233 Gdansk, ul. Narutowicza 11/12, Poland
Michal Glinski
Gdansk University of Technology, Faculty of Mechanical Engineering, ul. Narutowicza 11/12, 80-952 Gdansk, Poland

RÉSUMÉ

In the paper, a theoretical model of the boiling crisis at high vapor quality is modified from the earlier version presented by Sedler and Mikielewicz [1]. The model employs the analysis of the film dryout process on the wall which allows formulation of the differential equations of liquid mass balance in the film and the core. The solution of these equations contains the parameters which are determined experimentally in the paper since theoretical determination of them involves serious difficulties. The relations for determination of deposition and entrainment rate are taken from [2].


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