Abstract
The nonlinear theory of 'shear-current' effect in a nonrotating and nonhelical homogeneous turbulence with an imposed mean velocity shear was described. The nonlinear shear-current effect was found to play a significant role in nonlinearity in a mean-field dynamo. It was observed that the nonlinear shear-current effect is responsible for determination of the level of the saturated mean magnetic field. To derive equations for the nonlinear coefficients, which defines the mean electromotive force in a homogeneous turbulence with a mean velocity shear, a mean-field approach was used. The results show that the shear-current effect is not quenched and can explain dynamics of large-scale magnetic fields in astrophysical bodies.
| Original language | English |
|---|---|
| Article number | 046310 |
| Pages (from-to) | 046310-1-046310-15 |
| Journal | Physical Review E |
| Volume | 70 |
| Issue number | 4 2 |
| DOIs | |
| State | Published - 1 Oct 2004 |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Statistics and Probability
- Condensed Matter Physics