Interplay between nonlinear transport crossphase and zonal models in two-field ITG turbulence
Paper in proceeding, 2025
It is well-known that 𝐸 × 𝐵 flows can suppress
turbulent transport in fusion devices, either via
suppression of the turbulence amplitude [1], or via
suppression of the transport crossphase between the
electric potential and the transported quantity, e..g.
ion/electron temperature or density, etc ... [2].
Several works showed evidence of radial modulation of
the transport crossphase in the Hasegawa-Wakatani
model [3,4,5]. In the present work, we derive the
nonlinear crossphase dynamics directly from the Tensor
wave-kinetic equation (TWKE) [6] - a natural extension
of the standard WKE for drift-waves [7]. We apply this
analysis to the well-known Chalmers two-field ion-
temperature-gradient driven (ITG) turbulence model
[8,9].
turbulent transport in fusion devices, either via
suppression of the turbulence amplitude [1], or via
suppression of the transport crossphase between the
electric potential and the transported quantity, e..g.
ion/electron temperature or density, etc ... [2].
Several works showed evidence of radial modulation of
the transport crossphase in the Hasegawa-Wakatani
model [3,4,5]. In the present work, we derive the
nonlinear crossphase dynamics directly from the Tensor
wave-kinetic equation (TWKE) [6] - a natural extension
of the standard WKE for drift-waves [7]. We apply this
analysis to the well-known Chalmers two-field ion-
temperature-gradient driven (ITG) turbulence model
[8,9].
Author
M. Leconte
Johan Anderson
Chalmers, Space, Earth and Environment
Lei Qi
AAPPS-DPP
Vol. 9 1-1
9th Asia-Pacific Conference on Plasma Physics AAPPS-DPP
Fukuoka, Japan,
Fukuoka, Japan,
Roots
Basic sciences
Subject Categories (SSIF 2025)
Fusion, Plasma and Space Physics
Physical Sciences