5 papers
Ion-temperature-gradient turbulence from finite to weak magnetic shear regime
Zihao Wang, Tiannan Wu, Shaojie Wang
The tokamak, a toroidal magnetic device confining a hot plasma, is one of the most advanced approaches to fusion energy. A central obstacle is turbulent transport driven by the ion…
2DESR: a two-dimensional Fourier-space gyrokinetic eigenvalue code for the ion-temperature-gradient modes in tokamaks
Haochuan Wang, Jie Wang, Yuefeng Qiu +6
A two-dimensional (2D) gyrokinetic eigenvalue solver, 2DESR, has been developed to solve the 2D gyrokinetic eigenvalue problem in the poloidal Fourier space for the ion-temperature…
Geometric curvature effect on suppressing the Ion-Temperature-Gradient mode near the magnetic axis
Tiannan Wu, Shaojie Wang
Global gyrokinetic simulation of the ion temperature gradient mode shows that the radial electric field () well upshifts the critical temperature gradient near the magnetic ax…
Discretization form of the continuity condition at the polar axis, with application to the gyrokinetic simulation in a magnetic fusion torus
Tiannan Wu, Zihao Wang, Shaojie Wang
A new computational method to solve the hyperbolic (Vlasov) equation and the elliptic (Poisson-like) equation at the polar axis is proposed. It is shown that the value of a scalar…
Evolution of self-organized structure, the internal transport barrier in the ion-temperature-gradient driven gyrokinetic turbulence
S. Wang, Z. Wang, T. Wu
Understanding the self-organization of the most promising internal transport barrier in fusion plasmas needs a long-time nonlinear gyrokinetic global simulation. The Neighboring Eq…