Towards a simple model of compressible Alfv{acute e}nic turbulence

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PhysRevE.56.R2371· OSTI ID:542225

Medvedev, M V; Diamond, P H ^[1]

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1. Physics Department, University of California at San Diego, La Jolla, California 92093 (United States)

A simple model of collisionless, dissipative, compressible magnetohtdrodynamics (Alfv{acute e}nic) turbulence in a magnetized system is investigated. In contrast to more familiar paradigms of turbulence, dissipation arises from Landau damping, enters via nonlinearity, and is distributed over all scales. The theory predicts that two different regimes or phases of turbulence are possible, depending on the ratio of steepening to damping coefficient (m{sub 1}/m{sub 2}). For strong damping ({vert_bar}m{sub 1}/m{sub 2}{vert_bar}{lt}1), a regime of smooth, hydrodynamic turbulence is predicted. For {vert_bar}m{sub 1}/m{sub 2}{vert_bar}{gt}1, steady state turbulence does not exist in the hydrodynamic limit. Rather, spikey, small scale structure is predicted. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: University of California
• DOE Contract Number: FG03-88ER53275
• OSTI ID: 542225
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics Journal Issue: 3 Vol. 56; ISSN PLEEE8; ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALFVEN WAVES
COMPRESSIBLE FLOW
LANDAU DAMPING
MAGNETOHYDRODYNAMICS
TURBULENCE