Skip to main content
eScholarship
Open Access Publications from the University of California

Zonal flow triggers the L-H transition in the Experimental Advanced Superconducting Tokamak

  • Author(s): Manz, P
  • Xu, GS
  • Wan, BN
  • Wang, HQ
  • Guo, HY
  • Cziegler, I
  • Fedorczak, N
  • Holland, C
  • Müller, SH
  • Thakur, SC
  • Xu, M
  • Miki, K
  • Diamond, PH
  • Tynan, GR
  • et al.

Published Web Location

https://doi.org/10.1063/1.4737612Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License
Abstract

The kinetic energy transfer between shear flows and the ambient turbulence is investigated in the Experimental Advanced Superconducting Tokamak during the L-H transition. As the rate of energy transfer from the turbulence into the shear flow becomes comparable to the energy input rate into the turbulence, the transition into the H-mode occurs. As the observed behavior exhibits several predicted features of zonal flows, the results show the key role that zonal flows play in mediating the transition into H-mode. © 2012 American Institute of Physics.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View