Abstract
Turbulent ion heat transport and entropy transfer in non-axisymmetric toroidal plasma confinement are investigated by means of gyrokinetic simulations. Elongation of fluctuation spectrum into the radial wavenumber space is observed in the ion temperature gradient (ITG) turbulence simulation for a helical plasma configuration reconstructed from experimental data, and is examined by the entropy transfer function. For studying turbulence and zonal flows in a poloidally-rotating helical plasma, the conventional flux tube simulation model is extended to a bundle of flux tubes, where a multi-scale model of zonal flows and turbulence is formulated and tested by simulations of the linear ITG instability and the zonal flow response.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
