Spatial statistics of magnetic field in two-dimensional chaotic flow in the resistive growth stage
Abstract
The correlation tensors of magnetic field in a two-dimensional chaotic flow of conducting fluid are studied. It is shown that there is a stage of resistive evolution where the field correlators grow exponentially with time. The two- and four-point field correlation tensors are computed explicitly in this stage in the framework of Batchelor-Kraichnan-Kazantsev model. They demonstrate strong temporal intermittency of the field fluctuations and high level of non-Gaussianity in spatial field distribution.
- Publication:
-
Physics Letters A
- Pub Date:
- March 2017
- DOI:
- 10.1016/j.physleta.2017.01.045
- arXiv:
- arXiv:1609.03282
- Bibcode:
- 2017PhLA..381.1036K
- Keywords:
-
- Turbulent dynamo theory;
- Chaotic advection;
- Intermittency;
- Physics - Fluid Dynamics
- E-Print:
- doi:10.1016/j.physleta.2017.01.045