Publication:
Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics

Thumbnail Image
Identifiers
URI: https://hdl.handle.net/10016/36342
ISSN: 1070-664X
DOI: https://doi.org/10.1063/1.4993209
UXXI: AR/0000020423
Files
Transport_PP_2017_ps.pdf (3.88 MB)
Publication date
2017-07
Defense date
Authors
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics
Impact
Google Scholar
Export
Research Projects
Organizational Units
Journal Issue
Abstract
The reduction of turbulent transport across sheared flow regions has been known for a long time in magnetically confined toroidal plasmas. However, details of the dynamics are still unclear, in particular, in what refers to the changes caused by the flow on the nature of radial transport itself. In Paper II, we have shown in a simplified model of drift wave turbulence that, when the background profile is allowed to evolve self-consistently with fluctuations, a variety of transport regimes ranging from superdiffusive to subdiffusive open up depending on the properties of the underlying turbulence [D. Ogata et al., Phys. Plasmas 24, 052307 (2017)]. In this paper, we show that externally applied sheared flows can, under the proper conditions, cause the transport dynamics to be diffusive or subdiffusive.
Description
Keywords
Bibliographic citation
Ogata, D., Newman, D. E., & Sánchez, R. (2017). Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics. Physics of Plasmas, 24(7), 072309
Collections
DF - GFP - Artículos de revistas