振動を受ける平板上の磁性流体液滴の挙動

概要

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The dynamic behavior of a magnetic liquid drop on a non-magnetic solid base subject to magnetic fields and vertical vibration have been studied experimentally and theoretically. The frequency responses of a single magnetic liquid droplet are investigated. Measurements have been made of the amplitude of time-varying height and the contact angle of a magnetic droplet on a horizontal solid base. It was found that the magnetic liquid droplet responds to the excitation in the elongation and contraction of its height. The frequency of the time-varying droplet height and contact angle corresponded to the excitation frequency. Theoretical analysis explains the experimental results of the droplet motion, that is, the droplet height is determined by the Bond number, the magnetic Bond number and the vibration Bond number.
1992-05-25