Modeling and numerical prediction of flow boiling in a thin geometry

    Authors

    R. Kumar; C. C. Maneri;T. D. Strayer

    Comments

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    Abbreviated Journal Title

    J. Heat Transf.-Trans. ASME

    Keywords

    boiling; heat transfer; modeling; multi-phase; HEAT-TRANSFER; 2-PHASE FLOW; Thermodynamics; Engineering, Mechanical

    Abstract

    An analysis capability to examine the two-phase bubbly flow in high pressure boiling systems has been developed. The models have been adapted from the literature for a narrow high aspect ratio geometry using the measurements obtained in a companion paper Three-dimensional computational results have been compared with cross-section averaged and line-averaged void fractions measured with a gamma densitometer and local void fraction measured with a hot-film anemometer These comparisons have been made over a wide range of flow inlet conditions, wall heating and system pressure. Comparisons are found to be good when the flow is bubbly, but at high void fractions, where the flow is churn-turbulent or annular the two-field modeling approach does not perform adequately. This result emphasizes the need for multiple field modeling.

    Journal Title

    Journal of Heat Transfer-Transactions of the Asme

    Volume

    126

    Issue/Number

    1

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    22

    Last Page

    33

    WOS Identifier

    WOS:000220448500004

    ISSN

    0022-1481

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