Repeated interruption and restoration of current in liquid metals as a nonlinear phenomenon

被引：3

作者：

Volkov, NB ^{[1
]}

Zubarev, NM ^{[1
]}

Zubareva, OV ^{[1
]}

Shakatov, VT ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI, INST HIGH CURRENT ELECT, SIBERIAN DIV, TOMSK 634055, RUSSIA

来源：

PHYSICA D-NONLINEAR PHENOMENA | 1997年 / 109卷 / 3-4期

基金：

俄罗斯基础研究基金会;

关键词：

magnetohydrodynamic instabilities; repeated interruption and restoration of electric current; large-scale spatial structures; low-mode model; center-manifold reduction; method of averaging;

D O I：

10.1016/S0167-2789(97)00071-7

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

The evolution of large-scale convective instabilities in a plasma-like medium in the field of its own electric current is considered in the framework of the magneto-hydrodynamics of incompressible viscous resistive liquids. The simplest low-mode model of the nonlinear interaction of perturbations is proposed and analytically investigated. According to this model, if the amplitude of the current exceeds its critical value, the effective resistance of the medium can break into oscillations. The model has enabled us to estimate with reasonable exactness the threshold commutation current and the frequency of current oscillation for experiments on repeated interruption and restoration of electric current through the In-Ga eutectic.

引用

页码：315 / 324

页数：10

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