Drift-flux correlation for rod bundle geometries

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

26 Scopus Citations
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  • Collin Clark
  • Matthew Griffiths
  • Shao-Wen Chen
  • Mamoru Ishii
  • Tetsuhiro Ozaki
  • Ikuo Kinoshita
  • Yoshitaka Yoshida


Original languageEnglish
Pages (from-to)1-14
Journal / PublicationInternational Journal of Heat and Fluid Flow
Publication statusPublished - Aug 2014
Externally publishedYes


A new drift-flux correlation has been developed to predict void fraction over a wide range of two-phase flow conditions in rod bundle geometries. An experimental database that represents low liquid flow and low pressure conditions in a scaled 8. ×. 8 rod bundle test facility is emphasized for this work. At these conditions, recirculating flow patterns may affect two-phase flow characteristics. Such effects may not be appropriately considered in earlier rod bundle correlations for drift velocity and distribution parameter. In the current approach, an existing drift-flux correlation that accounts for the effect of recirculating flow as two-phase flow regimes transition from bubbly to cap-bubbly flow is incorporated to determine distribution parameter. A performance analysis demonstrates that the proposed correlation improves upon existing correlations with an average relative error of ±4.5% when predicting the database utilized for in this work. The new correlation is also demonstrated to scale appropriately to prototypic plant conditions. © 2014 Elsevier Inc.

Research Area(s)

  • Boiling water reactor, Drift-flux, Rod bundle, Two-phase flow, Void fraction

Bibliographic Note

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Citation Format(s)

Drift-flux correlation for rod bundle geometries. / Clark, Collin; Griffiths, Matthew; Chen, Shao-Wen; Hibiki, Takashi; Ishii, Mamoru; Ozaki, Tetsuhiro; Kinoshita, Ikuo; Yoshida, Yoshitaka.

In: International Journal of Heat and Fluid Flow, Vol. 48, 08.2014, p. 1-14.

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