A simplified, numerically verified model for the global plasma reaction on a local cooling

Journal Article · Tue Oct 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4823995· OSTI ID:22218527

Tokar, M. Z.; Koltunov, M. ^[1]

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1. Institut für Energie- und Klimaforschung-Plasmaphysik, Forschungszentrum Jülich GmbH, EURATOM Association, Trilateral Euregio Cluster, D-52425 Jülich (Germany)

An analytical model for heat losses along a magnetic surface to its small region cooled down abruptly to a very low temperature is deduced by applying a principle of minimum entropy production and verified by comparing with the results obtained by solving non-stationary two-dimensional heat conduction equation numerically. The model is elaborated further by taking into account heat flux limit and the plasma density modification due to the particle convection along the magnetic surface, triggered by the plasma pressure imbalance arising by the local cooling.

• OSTI ID: 22218527
• Journal Information: Physics of Plasmas, Vol. 20, Issue 10; Other Information: (c) 2013 EURATOM; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGED-PARTICLE TRANSPORT
COMPARATIVE EVALUATIONS
CONVECTION
COOLING
ENTROPY
HEAT FLUX
HEAT LOSSES
MAGNETIC SURFACES
MAGNETISM
NUMERICAL ANALYSIS
PLASMA DENSITY
PLASMA PRESSURE
THERMAL CONDUCTION
TWO-DIMENSIONAL CALCULATIONS
WALL EFFECTS