Modeling of bubble-layer thickness for formulation of one-dimensional interfacial area transport equation in subcooled boiling two-phase flow

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)1409-1423
Journal / PublicationInternational Journal of Heat and Mass Transfer
Volume46
Issue number8
Publication statusPublished - Apr 2003
Externally publishedYes

Abstract

In relation to the formulation of one-dimensional interfacial area transport equation in a subcooled boiling flow, the bubble-layer thickness model was introduced to avoid many covariances in cross-sectional averaged interfacial area transport equation in the subcooled boiling flow. The one-dimensional interfacial area transport equation in the subcooled boiling flow was formulated by partitioning a flow region into two regions; boiling two-phase (bubble layer) region and liquid single-phase region. The bubble-layer thickness model assuming the square void peak in the bubblelayer region was developed to predict the bubble-layer thickness of the subcooled boiling flow. The obtained model was evaluated by void fraction profile measured in an internally heated annulus. It was shown that the bubble-layer thickness model could be applied to predict the bubble-layer thickness as well as the void fraction profile. In addition, the constitutive equation for the distribution parameter of the boiling flow in the internally heated annulus, which was used for formulating the bubble-layer thickness model, was developed based on the measured data. The model developed in this study will eventually be used for the development of reliable constitutive relations, which re.ect the true transfer mechanisms in subcooled boiling flows. © 2002 Elsevier Science Ltd. All rights reserved.

Research Area(s)

  • Annulus, Bubble-layer thickness, Bubbly flow, Distribution parameter, Double-sensor conductivity probe, Drift-flux model, Interfacial area transport, Multiphase flow, Subcooled boiling flow, Two-fluid model

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Modeling of bubble-layer thickness for formulation of one-dimensional interfacial area transport equation in subcooled boiling two-phase flow. / Hibiki, Takashi; Situ, Rong; Mi, Ye; Ishii, Mamoru.

In: International Journal of Heat and Mass Transfer, Vol. 46, No. 8, 04.2003, p. 1409-1423.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review