Previous work relating to two-phase flow in manifolds has dealt primarily with 1-g phase distribution at each junction. Understanding the redistribution of gas and liquid at each junction in microgravity allows the investigator to calculate specific thermal-hydraulic phenomena in each branch or run. A model was developed at Texas A&M to determine the phasic distribution in an arbitrary manifold. Previously developed phase distribution equations are used to describe the redistribution at a dividing T-junction (Young et al., 1999). Mass flow rate, void fraction, and pressure drop are calculated iteratively for the entire manifold. Output from the model was compared to data taken from tests aboard NASA’s KC-135. The test manifold consisted of a run with three branches. The system allowed the output to be directed to a phase separator or to collection bags. The distribution of liquid and gas in each collection bag could be used to determine the mass fraction in each branch and run. Results show good agreement between predicted mass fraction and flight data.


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    Titel :

    Modeling and testing of two-phase flow in manifolds under microgravity conditions


    Beteiligte:
    Best, Frederick (Autor:in) / Kurwitz, Cable (Autor:in) / El-Genk, Mohamed S. (Herausgeber:in) / Bragg, Mary J. (Herausgeber:in)

    Kongress:

    Space Technology and Applications International Forum - 2001 ; 2001 ; Albuquerque, New Mexico


    Erschienen in:

    AIP Conference Proceedings ; 552 , 1 ; 241-246


    Erscheinungsdatum :

    02.02.2001


    Format / Umfang :

    6 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Modeling and Testing of Two-Phase Flow in Manifolds Under Microgravity Conditions

    Best, F. / Kurwitz, C. / Institute for Space and Nuclear Power Studies | British Library Conference Proceedings | 2001


    Modeling of Two-Phase Flow in Manifolds Under Microgravity Conditions

    Young, C. / Best, B. / Kurwitz, C. et al. | British Library Conference Proceedings | 1999


    Modeling of two-phase flow in manifolds under microgravity conditions

    Young, Cale / Best, Frederick / Kurwitz, Cable | American Institute of Physics | 1999


    Two-Phase Flow Mapping and Transition Under Microgravity Conditions

    Parang, M. / Chao, D. / AIAA | British Library Conference Proceedings | 1998