Linear delta-f simulations of nonlocal electron heat transport

Technical Report · Thu Jan 27 04:00:00 EST 2000

DOI:https://doi.org/10.2172/750428· OSTI ID:750428

Brunner, S ^[1]; Valeo, E; Krommes, J A

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1. Princeton Plasma Physics Laboratory

Nonlocal electron heat transport calculations are carried out by making use of some of the techniques developed previously for extending the delta f method to transport time scale simulations. By considering the relaxation of small amplitude temperature perturbations of a homogeneous Maxwellian background, only the linearized Fokker-Planck equation has to be solved, and direct comparisons can be made with the equivalent, nonlocal hydrodynamic approach. A quasineutrality-conserving algorithm is derived for computing the self-consistent electric fields driving the return currents. In the low-collisionality regime, results illustrate the importance of taking account of nonlocality in both space and time.

• Research Organization: Princeton Plasma Physics Lab., Princeton, NJ (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 750428
• Report Number(s): PPPL--3427
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALGORITHMS
CALCULATION METHODS
ELECTRIC CURRENTS
ELECTRIC FIELDS
ELECTRON TEMPERATURE
FOKKER-PLANCK EQUATION
HEAT TRANSFER
PLASMA SIMULATION