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    Formation of microbeads during vapor explosions of Field's metal in water

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    Type
    Article
    Authors
    Kouraytem, Nadia cc
    Li, Erqiang cc
    Thoroddsen, Sigurdur T cc
    KAUST Department
    High-Speed Fluids Imaging Laboratory
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    FCC/1/1975
    Date
    2016-06-17
    Permanent link to this record
    http://hdl.handle.net/10754/614393
    
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    Abstract
    We use high-speed video imaging to investigate vapor explosions during the impact of a molten Field's metal drop onto a pool of water. These explosions occur for temperatures above the Leidenfrost temperature and are observed to occur in up to three stages as the metal temperature is increased, with each explosion being more powerful that the preceding one. The Field's metal drop breaks up into numerous microbeads with an exponential size distribution, in contrast to tin droplets where the vapor explosion deforms the metal to form porous solid structures. We compare the characteristic bead size to the wavelength of the fastest growing mode of the Rayleigh-Taylor instability.
    Citation
    Formation of microbeads during vapor explosions of Field's metal in water 2016, 93 (6) Physical Review E
    Sponsors
    The research described herein was funded by KAUST. We acknowledge financial support from CCRC at KAUST, Extreme Combustion FCC/1/1975. We thank Ivan Vakarelski for help with some of the experiments.
    Publisher
    American Physical Society (APS)
    Journal
    Physical Review E
    DOI
    10.1103/PhysRevE.93.063108
    PubMed ID
    27415359
    Additional Links
    http://link.aps.org/doi/10.1103/PhysRevE.93.063108
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevE.93.063108
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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