Drift-flux model in a sub-channel of rod bundle geometry
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Altres documents de l'autoria: Juliá Bolívar, José Enrique; Hibiki, Takashi; Ishii, M.; Yun, Byong-Jo; Park, Goon-Cherl
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
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comunitat-uji-handle3:10234/8617
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http://dx.doi.org/10.1016/j.ijheatmasstransfer.2009.02.012 |
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Títol
Drift-flux model in a sub-channel of rod bundle geometryData de publicació
2009Editor
ElsevierISSN
179310Cita bibliogràfica
International Journal of Heat and Mass Transfer, 52, 13-14, p. 3032-3041Tipus de document
info:eu-repo/semantics/articleParaules clau / Matèries
Resum
In view of the practical interest of the drift-flux model for two-phase flow analysis, the distribution parameter and drift velocity constitutive equations have been obtained for subcooled boiling flow in a sub-channel ... [+]
In view of the practical interest of the drift-flux model for two-phase flow analysis, the distribution parameter and drift velocity constitutive equations have been obtained for subcooled boiling flow in a sub-channel of rod bundle geometry. The constitutive equation of the distribution parameter for subcooled boiling flow in a sub-channel is obtained from the bubble-layer thickness model. In this derivation an existing constitutive equation for subcooled boiling flow in a round pipe is modified by taking account of the difference in the flow channel geometry between the sub-channel and round pipe. The constitutive equation of the drift velocity is proposed based on an existing correlation and considering the rod wall and sub-channel geometry effects. The prediction accuracy of the newly developed correlations has been checked against experimental data in a 3 × 3 rod bundle sub-channel, obtaining better predicting errors than the existing correlations most used in literature. © 2009 Elsevier Ltd. All rights reserved. [-]
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