Zonal flows near marginal stability in drift wave transport
Journal article, 2015

The Dimits nonlinear upshift has for the first time been explained with good quantitative agreement. This was done with the reactive toroidal advanced fluid model. This is also the first time that the Dimits shift has been simulated in a transport code. The upshift of the critical gradient for transport is due to the fluid resonance, enhancing the zonal flow and the finite width is due to detuning of the resonance by the linear growth rate.

nonlinear upshift

drift waves

zonal flows

Author

G.Q. Wang

Chinese Academy of Sciences

J. Ma

Chinese Academy of Sciences

Jan Weiland

Chalmers, Applied Physics, Nuclear Engineering

Physica Scripta

0031-8949 (ISSN)

Vol. 90 6 Art. no. 065604-

Driving Forces

Sustainable development

Areas of Advance

Energy

Roots

Basic sciences

Subject Categories

Fusion, Plasma and Space Physics

DOI

10.1088/0031-8949/90/6/065604

More information

Latest update

10/2/2018