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Volume 37, Issue 1
Electromagnetic Gyrokinetic Simulation of Tokamak Plasma with Semi-Lagrangian Scheme

Pengfei Zhao, Xiaotao Xiao, Qilong Ren, Deng Zhou & Lei Ye

DOI: 10.4208/cicp.OA-2024-0050

Commun. Comput. Phys., 37 (2025), pp. 171-192.

Published online: 2025-01

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  • 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.

  • Keywords

Electromagnetic gyrokinetic, numerical Lie transform, re-splitting, semi-Lagrange.

  • AMS Subject Headings

65D05, 65Z05, 68U20, 82D10

  • Copyright

COPYRIGHT: © Global Science Press

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@Article{CiCP-37-171, author = {Zhao , PengfeiXiao , XiaotaoRen , QilongZhou , Deng and Ye , Lei}, title = {Electromagnetic Gyrokinetic Simulation of Tokamak Plasma with Semi-Lagrangian Scheme}, journal = {Communications in Computational Physics}, year = {2025}, volume = {37}, number = {1}, pages = {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.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2024-0050}, url = {http://global-sci.org/intro/article_detail/cicp/23784.html} }
TY - JOUR T1 - Electromagnetic Gyrokinetic Simulation of Tokamak Plasma with Semi-Lagrangian Scheme AU - Zhao , Pengfei AU - Xiao , Xiaotao AU - Ren , Qilong AU - Zhou , Deng AU - Ye , Lei JO - Communications in Computational Physics VL - 1 SP - 171 EP - 192 PY - 2025 DA - 2025/01 SN - 37 DO - http://doi.org/10.4208/cicp.OA-2024-0050 UR - https://global-sci.org/intro/article_detail/cicp/23784.html KW - Electromagnetic gyrokinetic, numerical Lie transform, re-splitting, semi-Lagrange. AB -

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.

Zhao , PengfeiXiao , XiaotaoRen , QilongZhou , Deng and Ye , Lei. (2025). Electromagnetic Gyrokinetic Simulation of Tokamak Plasma with Semi-Lagrangian Scheme. Communications in Computational Physics. 37 (1). 171-192. doi:10.4208/cicp.OA-2024-0050
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