Inverse-Leidenfrost phenomenon on nanofiber mats on hot surfaces

Christina M. Weickgenannt, Yiyun Zhang, Suman Sinha-Ray, Ilia V. Roisman, Tatiana Gambaryan-Roisman, Cameron Tropea, Alexander L. Yarin

    Research output: Contribution to journalArticlepeer-review

    90 Citations (Scopus)

    Abstract

    The Leidenfrost effect is a technically and industrially important phenomenon that severely restricts heat removal from high-heat-flux surfaces. A simple remedy to the Leidenfrost effect is provided by polymer nanofiber mats created and deposited by electrospinning on stainless steel surfaces. The influence of nanofiber mats on hydrodynamics and cooling efficiency of single drop impact onto hot surfaces has been investigated experimentally. The evolution of the drops has been recorded by a high-speed complimentary metal-oxide semiconductor camera, whereas the cooling temperature was measured by a thermocouple. A remarkable phenomenon was discovered: a mat of polymer nanofibers electrospun onto a heater surface can completely suppress the Leidenfrost effect, thereby increasing the rate of heat removal from the surface to the liquid drops significantly. The "inverse-Leidenfrost" effect is described qualitatively and quantitatively, providing clear physical reasons for the observed behavior.

    Original languageEnglish
    Article number036310
    JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
    Volume84
    Issue number3
    DOIs
    Publication statusPublished - 2011 Sept 13

    ASJC Scopus subject areas

    • Statistical and Nonlinear Physics
    • Statistics and Probability
    • Condensed Matter Physics

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