Journal
PHYSICAL REVIEW LETTERS
Volume 89, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.89.265007
Keywords
-
Categories
Ask authors/readers for more resources
We develop a new nonlinear mean field dynamo theory that couples field growth to the time evolution of the magnetic helicity and the turbulent electromotive force, (epsilon) over bar. We show that the difference between kinetic and current helicities emerges naturally as the growth driver when the time derivative of (epsilon) over bar is coupled into the theory. The solutions predict significant field growth in a kinematic phase and a saturation rate/strength that is magnetic Reynolds number dependent/independent in agreement with numerical simulations. The amplitude of early time oscillations provides a diagnostic for the closure.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available