Modeling of Lithium Granule Injection in NSTX with M3D-C1

Fil, A. ; Kolemen, E. ; Bortolon, A. ; Ferraro, N. ; Jardin, S. ; Parks, P. B.; Lunsford, R. ; Maingi, R.
Issue date: 2017
Cite as:
Fil, A., Kolemen, E., Bortolon, A., Ferraro, N., Jardin, S., Parks, P. B., Lunsford, R., & Maingi, R. Modeling of Lithium Granule Injection in NSTX with M3D-C1 [Data set]. Princeton Plasma Physics Laboratory, Princeton University. https://doi.org/10.11578/1562032
@electronic{fil_a_unknown,
  author      = {Fil, A. and
                Kolemen, E. and
                Bortolon, A. and
                Ferraro, N. and
                Jardin, S. and
                Parks, P. B. and
                Lunsford, R. and
                Maingi, R.},
  title       = {{Modeling of Lithium Granule Injection in
                 NSTX with M3D-C1}},
  publisher   = {{Princeton Plasma Physics Laboratory, Pri
                nceton University}},
  url         = {https://doi.org/10.11578/1562032}
}
Description:

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.

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