Influence of E{times}B and {nabla}{ital B} deift terms in 2-D edge/SOL transport simulations

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Classical particle drifts across the magnetic field can play an important role in tokamak edge-plasma transport. The relative influence of these terms is studied for self-consistent simulations by including them, together with anomalous diffusion transport, in a 2-D fluid model of edge-plasma transport for the DIII-D tokamak geometry. The drifts cause asymmetries in the plasma equilibrium which depend on the direction of the magnetic field, B. The basic results can be understood by dividing the drifts into three categories: diamagnetic, E x B, and {nabla}B. The dominant effect near the divertor plates is from the E x B drifts, while ... continued below

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15 p.

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Rognlien, T. D., LLNL May 15, 1998.

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Classical particle drifts across the magnetic field can play an important role in tokamak edge-plasma transport. The relative influence of these terms is studied for self-consistent simulations by including them, together with anomalous diffusion transport, in a 2-D fluid model of edge-plasma transport for the DIII-D tokamak geometry. The drifts cause asymmetries in the plasma equilibrium which depend on the direction of the magnetic field, B. The basic results can be understood by dividing the drifts into three categories: diamagnetic, E x B, and {nabla}B. The dominant effect near the divertor plates is from the E x B drifts, while the weaker {nabla}B drifts cause an increase in the magnitude of the radial electric field inside the magnetic separatrix. The diamagnetic terms, defined as divergence free, do not contribute to transport.

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15 p.

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OSTI as DE98058885

Other: FDE: PDF; PL:

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  • 13. international conference on plasma surface interactions, San Diego, CA (United States), 18-22 May 1998

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  • Other: DE98058885
  • Report No.: UCRL-JC--130761
  • Report No.: CONF-980560--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 292446
  • Archival Resource Key: ark:/67531/metadc684562

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  • May 15, 1998

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  • July 25, 2015, 2:20 a.m.

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  • April 10, 2017, 1:45 p.m.

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Rognlien, T. D., LLNL. Influence of E{times}B and {nabla}{ital B} deift terms in 2-D edge/SOL transport simulations, article, May 15, 1998; California. (digital.library.unt.edu/ark:/67531/metadc684562/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.