Mode coupling and anomalous dissipation in magnetohydrodynamic turbulence

Journal Article · Mon Mar 01 04:00:00 EST 1982 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.863767· OSTI ID:5767949

Tetreault, D J

An energy-conserving model of magnetohydrodynamic turbulence is described that predicts both mode coupling and turbulent dissipation. The dissipation takes the form of anomalous resistivity and viscosity due to turbulent magnetic fields. The model predicts a dual cascade of energy to large wavenumbers and magnetic flux to small wavenumbers. Turbulent rearrangement of equilibrium magnetic shear generates resonant fluctuations via a mixing length process. The effect of the turbulence on the disruptive instability in tokamaks is discussed.

• Research Organization: Massachusetts Inst. of Technology, Cambridge
• OSTI ID: 5767949
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 25:3; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
COUPLING
DIFFUSION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY CONSERVATION
ENERGY LOSSES
FLUID MECHANICS
HYDRODYNAMICS
LOSSES
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MARKOV PROCESS
MATHEMATICAL MODELS
MECHANICS
OSCILLATION MODES
PHYSICAL PROPERTIES
PLASMA
STOCHASTIC PROCESSES
TURBULENCE
VISCOSITY