3D Adaptive Mesh Refinement Simulations of Pellet Injection in Tokamaks

Technical Report · Mon Oct 20 04:00:00 EDT 2003

DOI:https://doi.org/10.2172/820114· OSTI ID:820114

Samtaney, R ^[1]; Jardin, S C; Colella, P; Martin, D F

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1. Princeton Plasma Physics Laboratory

We present results of Adaptive Mesh Refinement (AMR) simulations of the pellet injection process, a proven method of refueling tokamaks. AMR is a computationally efficient way to provide the resolution required to simulate realistic pellet sizes relative to device dimensions. The mathematical model comprises of single-fluid MHD equations with source terms in the continuity equation along with a pellet ablation rate model. The numerical method developed is an explicit unsplit upwinding treatment of the 8-wave formulation, coupled with a MAC projection method to enforce the solenoidal property of the magnetic field. The Chombo framework is used for AMR. The role of the E x B drift in mass redistribution during inside and outside pellet injections is emphasized.

• Research Organization: Princeton Plasma Physics Lab., NJ (US)
• Sponsoring Organization: USDOE Office of Science (SC) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 820114
• Report Number(s): PPPL-3891
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
COMPUTER SIMULATION
CONTINUITY EQUATIONS
DIMENSIONS
INJECTION
PELLETS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS (MHD)
MATHEMATICAL MODELS
PELLET INJECTION
PELLETS
RESOLUTION
SOURCE TERMS