Modeling of Lithium Granule Injection in NSTX with M3D-C1

Dataset · Sun Jan 01 00:00:00 EST 2017

DOI:https://doi.org/10.11578/1562032· OSTI ID:1562032

Fil, A; Kolemen, E; Bortolon, A; Ferraro, N; Jardin, S; Parks, P B; Lunsford, R; Maingi, R

In this paper we present initial simulations of pedestal control by Lithium Granule Injection (LGI) in NSTX. A model for small granule ablation has been implemented in the M3D-C1 code [1], allowing the simulation of realistic Lithium granule injections. 2D simulations in NSTX L-mode and H-mode plasmas are done and the effect of granule size, injection angle and velocity on the pedestal gradient increase are studied. For H-mode cases, the amplitude of the local pressure perturbation caused by the granules is highly dependent on the solid granule size. In our simulations, reducing the granule injection velocity allows one to inject more particles at the pedestal top.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: U. S. Department of Energy
• DOE Contract Number: AC02-09CH11466
• OSTI ID: 1562032
• Country of Publication: United States
• Language: English