Evaluation of interfacial area transport models for horizontal bubbly flow

Ran Kong, Seungjin Kim, Stephen Bajorek, Kirk Tien, Chris Hoxie

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

    4 Scopus citations

    Abstract

    This paper presents evaluation results of interfacial area transport equation (IATE) for horizontal air-water bubbly flow. The steady-state one-dimensional, one-group IATE for adiabatic air-water bubbly flow developed by Talley [1] is employed in the current evaluation study. The models evaluated include: (a) drift-flux-based closure relations for void-weighted bubble velocity and void fraction; (b) frictional pressure drop model based on the Lockhart-Martinelli approach; (c) bubble interaction mechanisms; and (d) covariance associated with asymmetric bubble distribution in horizontal two-phase flow. In order to evaluate the models, a local two-phase flow database obtained by the four-sensor conductivity probe in fourteen different test conditions is employed, which covers a wide range of flow conditions in horizontal bubbly flow regime, with superficial liquid and gas velocities ranging from 3.50-6.00 m/s and 0.09-1.00m/s, respectively. It is demonstrated that both the void weighted bubble velocity and void fraction are predicted well with an average percent difference of ±2.7%. The fictional pressure loss can be predicted with an average percent difference of ±1.12%. The covariance parameters calculated from the modeling approach generally compare well with those calculated from experimental data within ±20% difference. It is found that the IATE generally predicts the measured interfacial area concentration with an average percent difference of ±5.7%. Furthermore, the effect of liquid velocity on individual bubble interaction mechanisms is investigated. It is found that both the contributions of random collision and turbulent impact decrease as liquid velocity decreases.

    Original languageEnglish (US)
    Title of host publicationInternational Topical Meeting on Advances in Thermal Hydraulics 2016, ATH 2016
    PublisherAmerican Nuclear Society
    Pages459-472
    Number of pages14
    ISBN (Electronic)9780894487330
    StatePublished - Jan 1 2016
    Event3rd International Topical Meeting on Advances in Thermal Hydraulics 2016, ATH 2016 - New Orleans, United States
    Duration: Jun 12 2016Jun 16 2016

    Publication series

    NameInternational Topical Meeting on Advances in Thermal Hydraulics 2016, ATH 2016

    Other

    Other3rd International Topical Meeting on Advances in Thermal Hydraulics 2016, ATH 2016
    CountryUnited States
    CityNew Orleans
    Period6/12/166/16/16

    All Science Journal Classification (ASJC) codes

    • Nuclear Energy and Engineering
    • Geotechnical Engineering and Engineering Geology
    • Nuclear and High Energy Physics

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  • Cite this

    Kong, R., Kim, S., Bajorek, S., Tien, K., & Hoxie, C. (2016). Evaluation of interfacial area transport models for horizontal bubbly flow. In International Topical Meeting on Advances in Thermal Hydraulics 2016, ATH 2016 (pp. 459-472). (International Topical Meeting on Advances in Thermal Hydraulics 2016, ATH 2016). American Nuclear Society.