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Pellet ablation in Tokamak reactors
Rinker, Patrick
Rinker, Patrick
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d15031_Rinker.pdf
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2015-07
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Dissertation
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Electronic dissertations
Electronic dissertations
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Abstract
We implemented a rotational cloud model for the simulation of pellet ablation in a Tokamak reactor. We have shown that the ablation rate in the rotational cloud model converges quickly to a steady state value independent of the plasma warmup time. In contrast, the ablation rate in the non-rotating cloud model converges slowly to a value that depends upon the warmup time. We have also extended the neutral gas shielding (NGS) model for Maxwellian plasma electrons. A tumbling pellet model has been implemented. We have also compared the simulation results using a MUSCL scheme and a Discontinuous Galerkin (DG) scheme with a specialized nonuniform grid suited to the pellet problem in one space dimension, and developed a localized Discontinuous Galerkin method to solve the pellet ablation problem. One and two dimensional results are presented.
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Thesis (Ph.D.)-- Wichita State University, Fairmount College of Liberal Arts and Sciences, Dept. of Mathematics, Statistics and Physics
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Wichita State University
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Copyright 2015 Patrick Rinker