Fluid modeling of an ELMing H-mode and a RMP H-mode

S. Mordijck, R. A. Moyer, T. E. Evans, X. Bonnin, J. Canik, D. Coster, M. Groth, R. Maingi, T. H. Osborne, L. W. Owen, T. W. Petrie, D. Reiter, J. G. Watkins, E. A. Unterberg

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9 Scopus citations

Abstract

In this paper, we investigate the role of wall conditions during the density pump-out observed in Resonant Magnetic Perturbation (RMP) experiments. We use a 2D fluid code, coupled to a neutral Monte-Carlo code (SOLPS5) to model a reference ELMing H-mode. Next we modify either the recycling at the target plates or the pumping efficiency at the pump entrance. This causes a change in upstream profiles, that alone cannot account for the shape change observed in the RMP H-mode. Therefore, the radial transport must be altered to match the RMP H-mode. By comparing the transport model for the ELMing H-mode and the RMP H-mode, we show that inside the separatrix an increase in transport is necessary to model the effects of the applied perturbed field in RMP H-mode.

Original languageEnglish
Pages (from-to)299-302
Number of pages4
JournalJournal of Nuclear Materials
Volume390-391
Issue number1
DOIs
StatePublished - Jun 15 2009

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