The study of a bubbly laminar two-phase flow in an open capillary channel under microgravity conditions was conducted aboard the sounding rocket, Texus-45. The channel geometry, the liquid (FC-72) and the experimental conditions were chosen based on an analysis for application toward liquid management in space. The channel consists of two parallel plates that were b = 25 mm wide and separated by a distance of a = 10 mm. The flow along the length l = 80 mm is bounded by a free surface on one side and a plate on the opposite side. Bubbles are injected at the inlet of the capillary channel via six capillary tubes. The features of the gas injection were chosen with regard to the required bubble size, the injection frequency, and the gas and liquid flow rates. Different liquid and gas flow rates were tested leading to a volumetric quality ranging between 0.07 and 0.11. The experimental results show the interaction among bubbles and with the liquid free surface.


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    Title :

    Experimental investigation of a bubbly two-phase flow in an open capillary channel under microgravity conditions


    Additional title:

    Experimentelle Untersuchung einer Blasen-Zweiphasenströmung in einem offenen Kapillarkanal unter Mikrogravitationsbedingungen


    Contributors:

    Published in:

    Publication date :

    2010


    Size :

    10 Seiten, 9 Bilder, 3 Tabellen, 19 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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