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Conservative global gyrokinetic toroidal full-$$f$$ five-dimensional Vlasov simulation

Idomura, Yasuhiro   ; Ida, Masato; Kano, Takuma; Aiba, Nobuyuki; Tokuda, Shinji

A new conservative global gyrokinetic toroidal full-$$f$$ five-dimensional Vlasov simulation (GT5D) is developed using a novel non-dissipative conservative finite difference scheme. The scheme guarantees numerical stability by satisfying relevant first principles in the modern gyrokinetic theory, and enables robust and accurate simulations of tokamak micro-turbulence. GT5D is verified through comparisons of zonal flow damping tests, linear analyses of ion temperature gradient driven (ITG) modes, and nonlinear ITG turbulence simulations against a global gyrokinetic toroidal $$delta f$$ particle code. In the comparison, global solutions of the ITG turbulence are identified quantitatively by using two gyrokinetic codes based on particle and mesh approaches.

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Category:Computer Science, Interdisciplinary Applications

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