Volume 132, Number 2, October 2020
|Number of page(s)||5|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||22 December 2020|
No feedback is possible in a small-scale turbulent magnetic field
1 P.N. Lebedev Physical Institute of RAS - Leninskij pr.53, 119991, Moscow, Russia
2 National Research University Higher School of Economics - Myasnitskaya 20, 101000, Moscow, Russia
Received: 24 July 2020
Accepted: 11 September 2020
Evolution of a stochastically homogeneous magnetic field advected by an incompressible turbulent flow with large magnetic Prandtl numbers is considered at scales smaller than the Kolmogorov viscous scale. It is shown that, despite the unlimited growth of the magnetic field, its feedback on the fluid's dynamics remains negligibly small.
PACS: 47.10.-g – General theory in fluid dynamics / 47.65.-d – Magnetohydrodynamics and electrohydrodynamics / 47.27.tb – Turbulent diffusion
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