Two-Fluid and Resistive Nonlinear Simulations of Tokamak Equilibrium, Stability, and Reconnection
Authors: S. Jardin, C. Sovinec, J. Breslau, N. Ferraro, S. Hudson, J. King, S. Kruger, J. Ramos, and D. Schnack
Abstract:
The NIMROD and M3D / M3D-C1 codes now each have both a resistive MHD and a two-fluid (2F) capability including gyroviscosity and Hall terms. We describe: (1) a nonlinear 3D verification test in the resistive MHD regime in which the two codes are in detailed agreement , (2) new studies that illuminate the effect of two-fluid physics on spontaneous rotation in tokamaks, (3) studies of nonlinear reconnection in regimes of relevance to fusion plasmas with peak nonlinear reconnection rates that are essentially independent of the resistivity, and (4) linear two-fluid tearing mode calculations including electron mass that agree with analytic studies over a wide range of parameter regimes.
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Presented at: IAEA Conference, Geneva, Switzerland (Oct 2008)
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Download PPPL-4349 (pdf 631KB 8pp)
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