Investigation of one-dimensional interfacial area transport for vertical upward air-water two-phase flow in an annular channel at elevated pressures

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

12 Scopus Citations
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Author(s)

  • B. Ozar
  • C. S. Brooks
  • D. J. Euh
  • T. Hibiki
  • M. Ishii

Detail(s)

Original languageEnglish
Pages (from-to)362-379
Journal / PublicationNuclear Engineering and Design
Volume263
Publication statusPublished - 2013
Externally publishedYes

Abstract

The interfacial area transport of vertical, upward, air-water two-phase flows in an annular channel has been investigated at different system pressures. The inner and outer diameters of the annular channel were 19.1 mm and 38.1 mm, respectively. Twenty three inlet flow conditions were selected, which covered bubbly, cap-bubbly, and churn-turbulent flows. These flow conditions also overlapped with twelve conditions of a previous study for comparison. The local flow parameters, such as void fractions, interfacial area concentrations (IAC), and bubble interface velocities, were measured at nine radial positions for the three axial locations and converted into area-averaged parameters. The axial evolutions of local flow structure were interpreted in terms of bubble coalescence, breakup, expansion of the gas-phase due to pressure drop and system pressure. An assessment of interfacial area transport equation (IATE) was made and compared with the experimental data. A discussion of the comparison between model prediction and the experimental results were made. © 2013 Elsevier B.V. All rights reserved.

Bibliographic Note

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Citation Format(s)

Investigation of one-dimensional interfacial area transport for vertical upward air-water two-phase flow in an annular channel at elevated pressures. / Ozar, B.; Brooks, C. S.; Euh, D. J. et al.
In: Nuclear Engineering and Design, Vol. 263, 2013, p. 362-379.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review