Poloidal tilting symmetry of high order tokamak flux surface shaping in gyrokinetics
Poloidal tilting symmetry of high order tokamak flux surface shaping in gyrokinetics
复制标题
回旋动力学中高阶托卡马克通量表面成形的极向倾斜对称性
DOI:
10.1088/0741-3335/58/4/045023
复制
发表时间:
2016
影响因子:
2.2
通讯作者:
Ball J
中科院分区:
文献类型:
--
作者:
Ball J
A poloidal tilting symmetry of the local nonlinear δf gyrokinetic model is demonstrated analytically and verified numerically. This symmetry shows that poloidally rotating all the flux surface shaping effects with large poloidal mode number by a single tilt angle has an exponentially small effect on the transport properties of a tokamak. This is shown using a generalization of the Miller local equilibrium model to specify an arbitrary flux surface geometry. With this geometry specification we find that, when performing an expansion in large flux surface shaping mode number, the governing equations of gyrokinetics are symmetric in the poloidal tilt of the high order shaping effects. This allows us to take the fluxes from a single configuration and calculate the fluxes in any configuration that can be produced by tilting the large mode number shaping effects. This creates a distinction between tokamaks with mirror symmetric flux surfaces and tokamaks without mirror symmetry, which is expected to have important consequences for generating toroidal rotation using up–down asymmetry.
登录
查看更多内容
影响因子:
2.2
作者:
F. Parra;P. Catto
通讯作者:
P. Catto
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
F. Parra;I. Calvo
通讯作者:
I. Calvo
影响因子:
2.2
作者:
F. Parra;M. Barnes;I. Calvo;P. Catto
通讯作者:
P. Catto
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
F. Hinton;M. Rosenbluth
通讯作者:
M. Rosenbluth
DOI:
10.1136/ebmh.11.4.102
发表时间:
2008-10
期刊:
Evidence Based Mental Health
影响因子:
--
作者:
P. Cochat;L. Vaucoret;J. Sarles
通讯作者:
P. Cochat;L. Vaucoret;J. Sarles