THE DYNAMICS OF VORTEX STRUCTURES AND STATES OF CURRENT IN PLASMA-LIKE FLUIDS AND THE ELECTRICAL EXPLOSION OF CONDUCTORS .2. COMPUTER EXPERIMENT

In the present paper which is the second in a series, the dynamics of non-equilibrium phase transitions and states of current in electrophys ical systems providing an external circuit and a nonlinear element, th e model of which has been developed in the first paper of the series ( in the development of the model local kinetic transport coefficients w ere assumed to be constant), has been analysed and simulated. A non-eq uilibrium phase transition has been shown to be induced by large-scale hydrodynamic fluctuations (vortex structures). Critical exponents of the amplitude's singular behaviour (the order parameters) for three ty pes of circuit have been determined. Non-equilibrium phase transitions induced by external harmonic noise with a random or deterministic pha se have been studied. The detuning between the external noise frequenc y and natural frequencies of a nonlinear element determined by large-s cale hydrodynamic fluctuations have been shown to give rise to random oscillations, which are typical of a strange attractor. When the frequ encies coincide, a limit cycle appears in the system, which is charact erized by the fact that the phase trajectory does not fill the phase s pace completely.