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Simulation of the Effect of Plasma Flows in DIII-D Jet, and JT-60U.

DE200515013329

Publication Date	2002
Personal Author	Porter, G. D.; Rognlien, T. D.; Rensink, M. E.; Loarte, A.; Asakura, N.; Takenaga, H.; Matthews, G.
Page Count	16
Abstract	The results of 2D fluid plasma simulations of the ion flow in the boundary plasma of DIII-D, JET, and JT-60U are reported. The model includes the effects of drifts and of impurity radiation using a multi-species model of intrinsic carbon impurities. Drift effects are important in determining the primary and impurity ion fluxes in the SOL and the private region, with ExB drifts dominant. Simulated parallel velocities are consistent with experimental measurement on the high field side of JT-60U, where the parallel flow is determined by- ion sources. Simulated parallel velocities are significantly less than seer. in experiment at the outer midplane of JT-60U, and at the top of JET where the Bow is sensitive to poloidal variations of the turbulence driven transport, suggesting the velocity in these regions is determined by transport. Parallel flows are reversed by changing the direction of the ion VB drift relative to the X-point.
Keywords	Thermonuclear reactor materials Plasma flows Simulation models Numerical solution High temperature Pulses Spatial distribution Thermal testing Ion flows Temperature distribution
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200524

Simulation of the Effect of Plasma Flows in DIII-D Jet, and JT-60U.

Simulation of the Effect of Plasma Flows in DIII-D Jet, and JT-60U.
DE200515013329

Publication Date	2002
Personal Author	Porter, G. D.; Rognlien, T. D.; Rensink, M. E.; Loarte, A.; Asakura, N.; Takenaga, H.; Matthews, G.
Page Count	16
Abstract	The results of 2D fluid plasma simulations of the ion flow in the boundary plasma of DIII-D, JET, and JT-60U are reported. The model includes the effects of drifts and of impurity radiation using a multi-species model of intrinsic carbon impurities. Drift effects are important in determining the primary and impurity ion fluxes in the SOL and the private region, with ExB drifts dominant. Simulated parallel velocities are consistent with experimental measurement on the high field side of JT-60U, where the parallel flow is determined by- ion sources. Simulated parallel velocities are significantly less than seer. in experiment at the outer midplane of JT-60U, and at the top of JET where the Bow is sensitive to poloidal variations of the turbulence driven transport, suggesting the velocity in these regions is determined by transport. Parallel flows are reversed by changing the direction of the ion VB drift relative to the X-point.
Keywords	Thermonuclear reactor materials Plasma flows Simulation models Numerical solution High temperature Pulses Spatial distribution Thermal testing Ion flows Temperature distribution
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200524