Numerical simulations of ion temperature gradient-driven turbulence

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859540· OSTI ID:7101966

Ottaviani, M; Romanelli, F ^[1]; Benzi, R ^[2]; Briscolini, M; Santangelo, P; Succi, S ^[3]

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1. Associazione EURATOM ENEA sulla Fusione, ENEA CRE Frascati, Rome, (Italy)
2. University of Rome II, Tor Vergata, Rome, (Italy)
3. IBM/ECSEC, European Center for Scientific and Engineering Computing, Rome, (Italy)

High resolution numerical simulations of plasma turbulence driven by ion temperature gradients in the presence of magnetic field inhomogeneities have been performed with special attention to the behavior of the anomalous ion energy flux. The pressure gradient evolution is treated consistently with energy transport, allowing for the study of the saturated state in situations of relevance to tokamak plasmas. It is found that the presence of large-scale coherent structures significantly affects the turbulent losses, leading to a reduction of the flux with respect to mixing length estimates.

• OSTI ID: 7101966
• Journal Information: Physics of Fluids B; (USA), Vol. 2:1; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA
TURBULENCE
ION TEMPERATURE
ENERGY LOSSES
ENERGY TRANSFER
MAGNETIC FIELDS
MAGNETIC FLUX
NUMERICAL SOLUTION
PRESSURE GRADIENTS
SATURATION
SIMULATION
TOKAMAK DEVICES
CLOSED PLASMA DEVICES
LOSSES
THERMONUCLEAR DEVICES
700103* - Fusion Energy- Plasma Research- Kinetics