The magnetohydrodynamics of mean fields in an inhomogeneous turbulent medium
Abstract
Orszag's approach is used to examine the behavior of a magnetic field in a moving conducting medium in the presence of developed turbulence. The study is based on equations describing the dynamics of large-scale magnetic-field components and of the velocity field. Particular attention is given to effects, such as diamagnetism and pulsating pressure, which are associated with turbulence inhomogeneity. It is shown that small-scale magnetic-field pulsations somewhat weaken the diamagnetic effect: this effect disappears in the case of a precise equality between the small-scale magnetic-field energy and the kinetic energy of pulsations. A formula determining the pulsating pressure is presented.
- Publication:
-
Magnitnaia Gidrodinamika
- Pub Date:
- September 1982
- Bibcode:
- 1982MagGi.......67K
- Keywords:
-
- Conducting Fluids;
- Magnetohydrodynamic Stability;
- Nonuniform Plasmas;
- Plasma Turbulence;
- Computational Fluid Dynamics;
- Diamagnetism;
- Kinetic Energy;
- Magnetic Field Configurations;
- Magnetic Flux;
- Plasma Dynamics;
- Pressure Effects;
- Velocity Distribution;
- Plasma Physics