Magnetohydrodynamic turbulence in a strongly magnetised plasma
From MaRDI portal
Publication:3018302
DOI10.1002/ASNA.200911306zbMATH Open1217.85015arXiv0911.2581OpenAlexW2084503703MaRDI QIDQ3018302
Author name not available (Why is that?)
Publication date: 21 July 2011
Published in: Astronomische Nachrichten: A Journal on all Fields of Astronomy (Search for Journal in Brave)
Abstract: I present a review of incompressible magnetohydrodynamic (MHD) turbulence in a strongly magnetised plasma. The approach is phenomenological even where a more rigorous theory is available, so that a reader armed with paper, pencil and some determination may be able to work through most of the physics. The focus is on the inertial-range spectra for very large (fluid and magnetic) Reynolds numbers. These theories of the inertial-range are built on two important facts: (i) Kraichnan's insight that the turbulent cascades are a result of nonlinear interactions between oppositely directed wavepackets of Elsasser fields; (ii) these oppositely directed wavepackets do not exchange energy, but contribute only to changing each other's spatial structures. I begin with a description and critique of the Iroshnikov-Kraichnan theory, and explore the fundamental departures necessitated by the anisotropic nature of the turbulence. Derivations of the inertial-range spectra of four regimes of MHD turbulence -- the balanced weak, balanced strong, imbalanced weak and the imbalanced strong cascades -- are then presented. The need for studying the spectra of imbalanced turbulence when the waves on the outer scale have a short correlation time is briefly discussed.
Full work available at URL: https://arxiv.org/abs/0911.2581
Magnetohydrodynamics and electrohydrodynamics (76W05) Hydrodynamic and hydromagnetic problems in astronomy and astrophysics (85A30)
Cites Work
Related Items (10)
Title not available (Why is that?) ⋮ Magneto-hydrodynamical model for plasma ⋮ Numerical simulation of anomalous plasma transport in the presence of magnetic turbulence. ⋮ Explosive instability and erupting flux tubes in a magnetized plasma ⋮ Title not available (Why is that?) ⋮ Cascade processes in magnetostrophic turbulence ⋮ Title not available (Why is that?) ⋮ Title not available (Why is that?) ⋮ Large-scale magnetic field sustainment by forced MHD wave turbulence ⋮ Magnetohydrodynamic ballooning instabilities excited by energetic trapped particles
This page was built for publication: Magnetohydrodynamic turbulence in a strongly magnetised plasma
Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q3018302)
