Adaptive grid finite element model of the tokamak scrapeoff layer

Conference · Sat Jul 01 00:00:00 EDT 1995

OSTI ID:232583

Kuprat, A P; Glasser, A H ^[1]

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1. Los Alamos National Lab., NM (United States)

The authors discuss unstructured grids for application to transport in the tokamak edge SOL. They have developed a new metric with which to judge element elongation and resolution requirements. Using this method, the authors apply a standard moving finite element technique to advance the SOL equations while inserting/deleting dynamically nodes that violate an elongation criterion. In a tokamak plasma, this method achieves a more uniform accuracy, and results in highly stretched triangular finite elements, except near separatrix X-point where transport is more isotropic.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• OSTI ID: 232583
• Report Number(s): CONF-941279-; ON: DE96002417; TRN: 96:002002-0006
• Resource Relation: Conference: Workshop on adaptive grid methods, Pleasanton, CA (United States), 8-9 Dec 1994; Other Information: PBD: Jul 1995; Related Information: Is Part Of Proceedings of the workshop on adaptive grid methods for fusion plasmas; Koniges, A.E.; Craddock, G.G.; Schnack, D.D.; Strauss, H.R.; PB: 500 p.
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
TOKAMAK DEVICES
TRANSPORT THEORY
PLASMA SCRAPE-OFF LAYER
FINITE ELEMENT METHOD
MESH GENERATION