Simulation of main-chamber recycling in DIII-D with the UEDGE code

M. E. Rensink*, M. Groth, G. D. Porter, T. D. Rognlien, D. L. Rudakov, J. G. Watkins

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

7 Sitaatiot (Scopus)

Abstrakti

This paper demonstrates a computer simulation model for single-null diverted plasma configurations that include simultaneous interaction of the scrape-off layer (SOL) plasma with toroidally symmetric main-chamber limiter surfaces and divertor plate surfaces. The simulations use the UEDGE code which treats the SOL plasma and recycled neutrals as two-dimensional toroidally symmetric fluids. The spatial domain can include field lines that intersect main-chamber surfaces in the far scrape-off layer, which allows the model to include simultaneous plasma contact with both divertor and main-chamber targets. Steady-state simulation results for low density L-mode plasma discharges in DIII-D show that total core fueling increases by about 70% when the limiter gap is reduced from 6 cm to 3 cm mapped to the midplane. The additional core fueling is due to neutrals which originate from the ion particle flux incident on the upper outer divertor baffle.

AlkuperäiskieliEnglanti
Sivut816-821
Sivumäärä6
JulkaisuJournal of Nuclear Materials
Vuosikerta363-365
DOI - pysyväislinkit
TilaJulkaistu - 15 kesäk. 2007
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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