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Electromagnetic Gyrokinetic Simulation of Tokamak Plasma with Semi-Lagrangian Scheme

Electromagnetic Gyrokinetic Simulation of Tokamak Plasma with Semi-Lagrangian Scheme

Year:    2025

Author:    Pengfei Zhao, Xiaotao Xiao, Qilong Ren, Deng Zhou, Lei Ye

Communications in Computational Physics, Vol. 37 (2025), Iss. 1 : pp. 171–192

Abstract

The re-splitting $δf$ method(Ye et. al CPC 2020) has been implemented into the global semi-Lagrangian gyrokinetic code NLT (Lei Ye et al. 2016, JCP) for the simulations of electromagnetic micro-turbulence in tokamak plasmas. The re-splitting method can be incorporated with the numerical Lie transform method, which is an essential numerical scheme for NLT code, to mitigate the cancellation problem appears in the gyrokinetic $p_{||}$-formulation with gyrokinetic ions and drift-kinetic electrons. With this method, the ion temperature gradient mode (ITG), the kinetic ballooning mode (KBM) and trapped electron mode (TEM) are simulated by NLT and the results are well benchmarked with other gyrokinetic simulation codes.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cicp.OA-2024-0050

Communications in Computational Physics, Vol. 37 (2025), Iss. 1 : pp. 171–192

Published online:    2025-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    22

Keywords:    Electromagnetic gyrokinetic numerical Lie transform re-splitting semi-Lagrange.

Author Details

Pengfei Zhao

Xiaotao Xiao

Qilong Ren

Deng Zhou

Lei Ye