Explicit Runge–Kutta integrator with Hamiltonian correction for long-time simulations of guiding-center orbit in tokamak configurations

Physics of Plasmas - Tập 15 Số 12 - 2008
Xiaotao Xiao1,2, Shaojie Wang1,3
1Center for Magnetic Fusion Theory 3 , Chinese Academy of Sciences, Hefei, 230031, China
2Institute of Plasma Physics 1 , Chinese Academy of Sciences, Hefei, 230031, China
3University of Science and Technology of China 2 Department of Modern Physics, , Hefei, 230026, China

Tóm tắt

Hamiltonian correction method is proposed to improve the variable time-step fourth-order Runge–Kutta methods in computing guiding-center orbits in a tokamak. It is found that the new method can significantly improve the computation efficiency of the conventional Runge–Kutta method in simulation of the long-time behavior of the guiding-center orbits.

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Tài liệu tham khảo

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Physics of Plasmas

Tập 15 Số 12

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