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@TECHREPORT{Ptz:136115,
      author       = {Pütz, Thomas and Institut für Plasmaphysik (Jülich) and
                      Association EURATOM - Forschungszentrum Jülich and
                      Universität (Düsseldorf)},
      title        = {{E}ntwicklung eines {F}inite {E}lemente {V}erfahrens zur
                      {M}odellierung der {P}lasmastroemung in der {R}andschicht
                      von {TOKAMAKS}},
      volume       = {2942},
      number       = {Juel-2942},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {PreJuSER-136115, Juel-2942},
      series       = {Berichte des Forschungszentrums Jülich},
      pages        = {IV, 158 S.},
      year         = {1994},
      note         = {Record converted from JUWEL: 18.07.2013},
      abstract     = {Over the last years effort is increasing to employ Finite
                      Element Methods for plasma edge fluid-modelling. Compared
                      with commonly applied procedures, this method has the
                      advantage, that not-simply-connected domains with complex
                      geometrical structure can be described in detail. The
                      purpose of the presented work is to analyse these
                      considerations and to develop a two-dimensional
                      Finite-Element-Code. This code should be able to simulate
                      the plasma flow pattern in the burning chamber of fusion
                      devices by an exact and solution-dependent discretisation.
                      Firstly the generalized Navier-Stokes-equations are modified
                      according to the special features of the edge plasma. From
                      these equations fundamental conditions for the applicability
                      of the method can be derived. They are consistent with
                      criteria found at other laboratories. Based on this, a
                      numerically stable solution procedure is formulated. It is
                      capable to deal with the strong anisotropy in plasma
                      transport and the large velocity gradients arising in front
                      of the limiter. Reionisation and other collision processes
                      of recycled neutral particles are described by coupling the
                      fluid model to the kinetic Monte-Carlo neutral-gas-code
                      EIRENE. For comparison and fundamental numerical studies a
                      fast analytical description of recycling is also available.
                      Such rather crude approximations are employed in other codes
                      often as the only option. By this, it is now possible to
                      treat the flow of ions and neutral atoms/molecules near
                      complex surface structures of fusion devices consistently.
                      Because of the time step restriction in the special solution
                      algorithm, up to now the electron temperature profile has to
                      be provided from elsewhere. It can, for example be
                      interpolated from experimental data or from results of other
                      independent code calculations. The newly developed code is
                      applied to a typical TOKAMAK-discharge (TEXTOR) and
                      characteristic results are discussed.},
      cin          = {IEF-4},
      cid          = {I:(DE-Juel1)VDB812},
      shelfmark    = {PGN - Fusion technology, plasma devices},
      typ          = {PUB:(DE-HGF)29},
      url          = {https://juser.fz-juelich.de/record/136115},
}