Knowledge of capillary migration of liquids in granular beds in microgravity is essential for the development of a substrate based nutrient delivery system for the growth of plants in space. This problem is also interesting from the theoretical as well as the practical point of view. The purpose of this study was to model capillary water propagation through a granular bed in microgravity. In our ground experiments, water propagation is driven primarily by capillary force. Data for spherical particle sizes in the range from 0.46 to 2 mm have been obtained. It was shown that the velocity of water propagation is very sensitive to particle size. Theoretical consideration is also provided. Actual space flight experiments are planned for the future to confirm our results.


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    Titel :

    Capillary Movement of Liquid in Granular Beds


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Yendler, Boris (Autor:in) / Webbon, Bruce (Autor:in)

    Kongress:

    International Conference On Environmental Systems ; 1993



    Erscheinungsdatum :

    01.07.1993




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Capillary movement of liquid in granular beds

    Yendler, Boris / Webbon, Bruce | NTRS | 1993


    Capillary Movement of Liquid in Granular Beds in Microgravity

    Webbon, B. / Yendler, B. / Podolsky, I. et al. | SAE Technical Papers | 1994



    Capillary Movement of Liquid in Granular Beds in Microgravity

    Yendler, B. S. / Webbon, B. / Podolski, I. et al. | British Library Conference Proceedings | 1996


    Capillary Movement of Liquid in Granular Beds in Microgravity

    Yendler, B. / Webbon, B. / Podolsky, I. et al. | British Library Conference Proceedings | 1994