An efficient transport solver for tokamak plasmas

A simple approach to efficiently solve a coupled set of 1-D diffusion-type transport equations with a stiff transport model for tokamak plasmas is presented based on the 4th order accurate Interpolated Differential Operator scheme along with a nonlinear iteration method derived from a root-finding a...

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Bibliographic Details
Published in:Computer physics communications 2017-05, Vol.214, p.1-5
Main Authors: Park, J.M., Murakami, M., St. John, H.E., Lao, L.L., Chu, M.S., Prater, R.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Diffusion equation
MATHEMATICS AND COMPUTING
Plasma simulation
Tokamak
Transport
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Summary:A simple approach to efficiently solve a coupled set of 1-D diffusion-type transport equations with a stiff transport model for tokamak plasmas is presented based on the 4th order accurate Interpolated Differential Operator scheme along with a nonlinear iteration method derived from a root-finding algorithm. Numerical tests using the Trapped Gyro-Landau-Fluid model show that the presented high order method provides an accurate transport solution using a small number of grid points with robust nonlinear convergence.
ISSN:0010-4655
1879-2944
DOI:10.1016/j.cpc.2016.12.018