McMillan, Ben F., Lapillonne, X., Brunner, S., Villard, L., Jolliet, S., Bottino, A., Görler, T. and Jenko, F. (2010) System size effects on gyrokinetic turbulence. Physical Review Letters, Vol.105 (No.15). Article no. 155001. doi:10.1103/PhysRevLett.105.155001 ISSN 0031-9007.

Research output not available from this repository.

Request-a-Copy directly from author or use local Library Get it For Me service.

Request Changes to record.

Abstract

The scaling of turbulence-driven heat transport with system size in magnetically confined plasmas is reexamined using first-principles based numerical simulations. Two very different numerical methods are applied to this problem, in order to resolve a long-standing quantitative disagreement, which may have arisen due to inconsistencies in the geometrical approximation. System size effects are further explored by modifying the width of the strong gradient region at fixed system size. The finite width of the strong gradient region in gyroradius units, rather than the finite overall system size, is found to induce the diffusivity reduction seen in global gyrokinetic simulations.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Society
ISSN:	0031-9007
Official Date:	4 October 2010
Dates:	Date Event 4 October 2010 Published
Volume:	Vol.105
Number:	No.15
Page Range:	Article no. 155001
DOI:	10.1103/PhysRevLett.105.155001
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (SNF), Swiss National Supercomputing Centre-CSCS, EPFL BlueGene facility

Request changes or add full text files to a record

Repository staff actions (login required)

View Item