Progress in Gyrokinetic Simulations of Toroidal ITG Turbulence.

Dimits, A. M. ; Cohen, B. I. ; Nevins, W. M. ; Shumaker, D. E.

Technical Information Center Oak Ridge Tennessee

关键词: Turbulence;    Thermonuclear reactors;    Simulation;    Temperature gradients;    Plasma;   

RP-ID  :  DE200415006486

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The 3-D nonlinear toroidal gyrokinetic simulation code PG3EQ is used to study toroidal ion temperature gradient (ITG) driven turbulence--a key cause of the anomalous transport that limits tokamak plasma performance. Systematic studies of the dependence of ion thermal transport on various parameters and effects are presented, including dependence on(rvec E) x(rvec B) and toroidal velocity shear, sensitivity to the force balance in simulations with radial temperature gradient variation, and the dependences on magnetic shear and ion temperature gradient.