Electrohydrostatics in pin-to-plate gas discharge system

Hiroyuki Kawamoto, Shinjiro Umezu, Ryuta Koizumi, Jumpei Shiraishi

    Research output: Contribution to journalArticle

    Abstract

    Electrohydrostatics was investigated in a pin-to-plate discharge system that consisted of the rigid pin electrode made of metal and the ion-conductive water electrode. At the dark discharge region, because extremely small electrostatic pull force, Coulomb force in the order of 10 μN, was induced, water shifted upward in the order of several 10 μm at the opposite center to the pin electrode. Over a threshold voltage corona discharge took place and a relatively large repulsive force, in the order of 100 μN, was induced due to the ionic wind. It depressed water and a large depression of water, in the order of several 100 μm at the center, was observed even to the naked eye. This phenomenon was named "Electrostatic Moses Effect." Deformation of the water level coincided with the pressure distribution on the metal plate electrode, if the surface tension of water and Coulomb force was included in the estimation to derive pressure distribution from the measured deformation of the water level. At the dark discharge region total force to the water electrode coincided with that to the pin electrode. However, it was larger than that to the pin electrode at corona discharge, because the reaction force due to the ionic wind was applied not only to the pin electrode but also to other part of the opposite electrode at the corona discharge.

    Original languageEnglish
    Pages (from-to)328-334
    Number of pages7
    JournalNippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
    Volume69
    Issue number2
    Publication statusPublished - 2003 Feb

    Fingerprint

    Discharge (fluid mechanics)
    Electrodes
    Gases
    Water
    Water levels
    Pressure distribution
    Plate metal
    Electrostatic force
    Threshold voltage
    Surface tension
    Electrostatics
    Ions
    Metals

    Keywords

    • Corona
    • Electrohydrostatics
    • Electromagnetic-induced vibration
    • Electrostatic force
    • Gas discharge
    • Spark

    ASJC Scopus subject areas

    • Mechanical Engineering

    Cite this

    Electrohydrostatics in pin-to-plate gas discharge system. / Kawamoto, Hiroyuki; Umezu, Shinjiro; Koizumi, Ryuta; Shiraishi, Jumpei.

    In: Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Vol. 69, No. 2, 02.2003, p. 328-334.

    Research output: Contribution to journalArticle

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    AU - Koizumi, Ryuta

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