Analytic axisymmetric equilibria with pressure anisotropy and non-parallel flow

被引:0
|
作者
Kuiroukidis, A. [1 ]
Evangelias, A. [2 ]
Throumoulopoulos, G. N. [2 ]
机构
[1] Technol Educ Inst Cent Macedonia, GR-62124 Serres, Greece
[2] Univ Ioannina, Dept Phys, Sect Astrogeophys, GR-45110 Ioannina, Greece
关键词
equilibrium; pressure anisotropy; plasma flow; INTERNAL TRANSPORT BARRIERS; TOKAMAK PLASMAS; TOROIDAL PLASMA; STABILITY; EQUATION;
D O I
10.1088/1361-6587/aa7c8d
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We extend previous work by two of the authors [Evangelias and Throumoulopoulos 2016 Plasma Phys. Control. Fusion 58 045022] and find analytic solutions to a generalized Grad-Shafranov equation (GGSE) with pressure anisotropy, hollow toroidal current density and incompressible flow of arbitrary direction. By specifying the surface-function terms involved in the GGSE as quadratic functions of the poloidal magnetic flux function, we derive analytic tokamak pertinent equilibria. It turns out that, irrespective of the shape of the toroidal current density profile, which is noticeably affected by the pressure anisotropy, this anisotropy has a paramagnetic effect for p(parallel to) > p(vertical bar) and a diamagnetic one for p(parallel to) < p(vertical bar). In addition, the parallel flow induces paramagnetism, while the residual toroidal flow associated with the electric field induces diamagnetism. The analytic results obtained here contribute to the physics understanding of axisymmetric equilibria with pressure anisotropy and flow, and can be employed for validating equilibrium codes.
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页数:7
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