Collisional boundary layer analysis for neoclassical toroidal plasma viscosity in tokamaks

被引：60

作者：

Shaing, K. C. ^{[1
,2
]}

Cahyna, P. ^{[3
,4
]}

Becoulet, M. ^{[5
]}

Park, J. -K. ^{[6
]}

Sabbagh, S. A. ^{[7
]}

Chu, M. S. ^{[8
]}

机构：

[1] Natl Cheng Kung Univ, Plasma & Space Sci Ctr, Tainan 70101, Taiwan

[2] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

[3] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA

[4] Assoc EURATOM IPP CR, Inst Plasma Phys AS CR, Prague, Czech Republic

[5] CEA DSM IRFM, Assoc EURATOM, Ctr Cadarache, F-13108 St Paul Les Durance, France

[6] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[7] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[8] Gen Atom Co, San Diego, CA 92185 USA

来源：

PHYSICS OF PLASMAS | 2008年 / 15卷 / 08期

关键词：

D O I：

10.1063/1.2969434

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：

It is demonstrated that the pitch angle integrals in the transport fluxes in the nu regime calculated in K. C. Shang [Phys. Plasmas 10, 1443 (2003)] are divergent as the trapped-circulating boundary is approached. Here, nu is the collision frequency. The origin of this divergence results from the logarithmic dependence in the bounce averaged radial drift velocity. A collisional boundary layer analysis is developed to remove the singularity. The resultant pitch angle integrals now include not only the original physics of the nu regime but also the boundary layer physics. The transport fluxes, caused by the particles inside the boundary layer, scale as root nu. (C) 2008 American Institute of Physics.

引用

页数：7

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