Development of a gyrokinetic-MHD energetic particle simulation code Part II: Linear simulations of Alfvén eigenmodes driven by energetic particles
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929252589371392 |
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| author | Liu, Z. Y. Jiang, P. Y. Liu, S. Y. Zhang, L. L. Fu, G. Y. |
| author_facet | Liu, Z. Y. Jiang, P. Y. Liu, S. Y. Zhang, L. L. Fu, G. Y. |
| contents | We have developed a hybrid code GMEC: Gyro-kinetic Magnetohydrodynamics (MHD) Energetic-particle Code that can numerically simulate energetic particle-driven Alfvén eigenmodes and energetic particle transport in tokamak plasmas. In order to resolve the Alfvén eigenmodes with high toroidal numbers effectively, the field-aligned coordinates and meshes are adopted. The extended MHD equations are solved with five-points finite difference method and fourth order Runge-Kutta method. The gyrokinetic equations are solved by particle-in-cell (PIC) method for the perturbed energetic particle pressures that are coupled into the MHD equations. Up to now, a simplified version of the hybrid code has been completed with several successful verifications including linear simulations of toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_14357 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Development of a gyrokinetic-MHD energetic particle simulation code Part II: Linear simulations of Alfvén eigenmodes driven by energetic particles Liu, Z. Y. Jiang, P. Y. Liu, S. Y. Zhang, L. L. Fu, G. Y. Plasma Physics We have developed a hybrid code GMEC: Gyro-kinetic Magnetohydrodynamics (MHD) Energetic-particle Code that can numerically simulate energetic particle-driven Alfvén eigenmodes and energetic particle transport in tokamak plasmas. In order to resolve the Alfvén eigenmodes with high toroidal numbers effectively, the field-aligned coordinates and meshes are adopted. The extended MHD equations are solved with five-points finite difference method and fourth order Runge-Kutta method. The gyrokinetic equations are solved by particle-in-cell (PIC) method for the perturbed energetic particle pressures that are coupled into the MHD equations. Up to now, a simplified version of the hybrid code has been completed with several successful verifications including linear simulations of toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes. |
| title | Development of a gyrokinetic-MHD energetic particle simulation code Part II: Linear simulations of Alfvén eigenmodes driven by energetic particles |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2402.14357 |