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

• Published in: Computer physics communications Vol. 179; no. 6; pp. 391 - 403
• Main Authors: Idomura, Yasuhiro, Ida, Masato, Kano, Takuma, Aiba, Nobuyuki, Tokuda, Shinji
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.09.2008
• Subjects: Gyrokinetic simulation; Non-dissipative finite difference; Vlasov simulation; δf Particle-In-Cell simulation; Vlasov simulation; Gyrokinetic simulation; 52.35.Ra; Non-dissipative finite difference; δf Particle-In-Cell simulation; 52.65.Tt; 52.30.Gz
• ISSN: 0010-4655; 1879-2944
• DOI: 10.1016/j.cpc.2008.04.005

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 δf 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.