Contact
    Start Publications Meniscus Asymmetry and Chemo-Marangoni Convection in Capillaries
    ←  Publication Finder
    Attension

    Meniscus Asymmetry and Chemo-Marangoni Convection in Capillaries

    Year: 2017

    Journal: Chem. Eng. Technol., Volume 40, NOV, page 2067–2074

    Authors: Eckert, Kerstin; Shi, Ying; Seidel, Kirsten; Schwarzenberger, Karin

    Organizations: German Space Agency (DLR); Federal Ministry of Economics and Technology (BMWi) [DLR 50WM0638, DLR 50WM1144]; Deutsche Forschungsgemeinschaft [1506]

    Keywords: Capillaries; Interfacial reactions; Marangoni convection; Meniscus deformation; Microgravity

    A liquid-liquid system inside a capillary in which an interfacial reaction leads to in situ production of a surfactant was studied experimentally. The resulting chemo-Marangoni convection induces periodic spreading-dewetting cycles in laboratory experiments. By selected experiments in microgravity, the individual phenomena of the system dynamics could be isolated. The spreading-dewetting cycles result from a complex interplay between the decrease in interfacial tension due to the production of surfactant, the chemo-Marangoni convection, and the gravity-driven deformation of the meniscus shape.
    View publication