橋絡液柱の破断に要する電流値と通電時間 : 橋絡移行におけるピンチ力の効果(第2報)

概要

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Electric current and time required to break up the conducting liquid bridge between the electrode and the pool are theoretically and experimentally investigated. Time-dependent deformation and breakup of the mercury bridge is observed by high speed photography. In the instability of the bridge due to electromagnetic pinch force, it is possible to simulate the initial stage in the necking process and evalutea the time to breakup, using the numerical solution technique for the dynamics of a viscous incompressible fluid with a free surface (MAC method) based on Finite-Difference Method. It is shown that there exists the critical current level responsible for occurring the instability of the bridging liquid and the time to breakup varies inversely as increasing current.
1989-11-05