Renormalization of Ampere Force in Developed Magnetohydrodynamic TYirbulence Academic Article uri icon

abstract

  • The variations of mean magnetic force caused by a developed small-scale magnetohydrodynamic (MHD) turbulence is considered. The generation of magnetic fluctuations at the expense of hydrodynamic pulsations results in a decrease of the elasticity of the largescale regular (mean) magnetic field. The effect is nonlinear in terms of the large- scale magnetic field. A modified renormalization group (MRNG) method was developed for the investigation of the MHD turbulence at the large magnetic Reynolds number. The MRNG method allows the derivation of equations for the turbulent transport coefficients: turbulent viscosity, turbulent magnetic diffusion and turbulent magnetic coefficients. The turbulent magnetic coefficients determine a contribution of the turbulence in the mean magnetic force. By contrast to the renormalization group method, spectrum and statistical properties of the …

publication date

  • January 1, 1994