Velocity and rotation measurements in acoustically levitated droplets

    Authors

    A. Saha; S. Basu;R. Kumar

    Comments

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    Abbreviated Journal Title

    Phys. Lett. A

    Keywords

    GLASS-FILAMENT; VAPORIZATION; EVAPORATION; PURE; FLOW; Physics, Multidisciplinary

    Abstract

    The velocity scale inside an acoustically levitated droplet depends on the levitator and liquid properties. Using Particle Imaging Velocimetry (PIV), detailed velocity measurements have been made in a levitated droplet of different diameters and viscosity. The maximum velocity and rotation are normalized using frequency and amplitude of acoustic levitator, and droplet viscosity. The non-dimensional data are fitted for micrometer- and millimeter-sized droplets levitated in different levitators for different viscosity fluids. It is also shown that the rotational speed of nanosilica droplets at an advanced stage of vaporization compares well with that predicted by exponentially fitted parameters. (C) 2012 Elsevier B.V. All rights reserved.

    Journal Title

    Physics Letters A

    Volume

    376

    Issue/Number

    45

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    3185

    Last Page

    3191

    WOS Identifier

    WOS:000311865500068

    ISSN

    0375-9601

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