On the prediction of horizontal bubbly flows using the interfacial area transport equation

Justin D. Talley, Seungjin Kim

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    To solve the two-fluid model utilized in current nuclear reactor system analysis codes, the interfacial area concentration (a i) is estimated through flow regime dependent correlations that rely on static regime transition criteria. This approach does not capture the continuous evolution of the interfacial structures, and thus, it can pose numerical issues near the transition boundaries. The interfacial area transport equation (IATE) can help address these shortcomings by providing a dynamic prediction of a ¡ through mechanistic source and sink terms that account for bubble coalescence and breakup. Most of the previous work for this approach has focused on vertical two-phase flow. However, relatively few studies have been performed for horizontal two-phase flows, where buoyancy strongly affects the phase distribution. To develop a one-dimensional, area-averaged form of the IATE for adiabatic, horizontal bubbly flows the following considerations are necessary: (1) pressure drop estimation, (2) bubble velocity/void fraction estimation, (3) determination of bubble interaction mechanisms, and (4) treatment of the asymmetric phase distribution. In the current work, treatment of the asymmetric phase distribution is presented.

    Original languageEnglish (US)
    Title of host publicationInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
    Pages2191-2198
    Number of pages8
    StatePublished - Nov 19 2012
    EventInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012 - Chicago, IL, United States
    Duration: Jun 24 2012Jun 28 2012

    Publication series

    NameInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
    Volume4

    Other

    OtherInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
    CountryUnited States
    CityChicago, IL
    Period6/24/126/28/12

    All Science Journal Classification (ASJC) codes

    • Energy Engineering and Power Technology
    • Nuclear Energy and Engineering

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