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    • A numerical study of geometrical effects on solidification of a compound droplet on a cold flat surface
    Authors: Binh D. Pham; Truong V. Vu; Lien V. T. Nguyen; Nang X. Ho; Cuong T. Nguyen; Hoe D. Nguyen; Vinh T. Nguyen; Hung V. Vu;  Advisor: -;  Co-Author: - (2021)

    In this study, the solidification process of a compound droplet is numerically simulated by an axisymmetric front-tracking/finite difference technique. The compound droplet placed on a cold flat surface in a gas environment consists of an inner gas core surrounded by a concentric shell phase-change liquid that forms an outer droplet. The initial droplet shape assumed as a spherical cap is therefore determined by two wetting angles known as the inner wetting angle (?0i for the inner core) and the outer wetting angle (?0o for the outer droplet). During the solidification process, there is the presence of two three-junction points where a prescribed growth angle ? is specified. We analyze the solidification process undergoing the influence of the geometrical aspects of the compound dro...