Abstract: The dynamics of secondary, anisotropic coherent structures behaving as a stationary wave, including zonal/mean flows, streamers and low-frequency long wavelength fluctuations, in multiple-scale turbulence in tokamak plasmas is investigated by performing 3D simulations as well as 2D modeling analyses. The role of nonlinear mode coupling is specifically discussed as a ubiquitous principal interaction mechanism in the dual processes of the generation and back-action of secondary structures on ITG and ETG turbulence. Here two new results are evidently presented on the importance of the mode coupling interaction: (1) While secondary zonal flows and long wavelength modes are generated through nonlinear mode coupling, the same back-actio...
In electrically neutral fluids or in plasma flows the presence of nonlinear interactions can lead to...
Multi-scale methods are utilized within the context of strongly magnetized plasmas to describe the i...
Abstract. The present work addresses the issue of identifying the major non-linear physics processes...
Global gyrokinetic particle simulations and nonlinear gyrokinetic theory indicate that electron temp...
International audienceThe saturation of heat and particle turbulent transport in tokamak plasmas is ...
The turbulent-zonal flow system due to micro-scale electron and meso-scale ion temperature gradient ...
In the present work different mechanisms for generation and suppression of turbulence are studied. T...
Plasma turbulence driven by drift wave instabilities is a key issue for understanding ...
Recently, we investigated the interaction between broadband drift mode turbulence and zonal flows ne...
"In this paper, we analyze the turbulence composed of collective modes with different scale lengths....
The role of large-scale fluctuation structures in electrostatic drift-wave-type plasma turbulence is...
Nonlinear interplay of the electron temperature gradient (ETG) modes and the trapped electron modes ...
Drift wave turbulence, in general a balance between E x B drift turbulence in planes perpendicular t...
International audienceGyrokinetic simulations in a closed fieldline geometry are presented to explor...
The properties of streamers and zonal magnetic structures in magnetic electron drift mode turbulence...
In electrically neutral fluids or in plasma flows the presence of nonlinear interactions can lead to...
Multi-scale methods are utilized within the context of strongly magnetized plasmas to describe the i...
Abstract. The present work addresses the issue of identifying the major non-linear physics processes...
Global gyrokinetic particle simulations and nonlinear gyrokinetic theory indicate that electron temp...
International audienceThe saturation of heat and particle turbulent transport in tokamak plasmas is ...
The turbulent-zonal flow system due to micro-scale electron and meso-scale ion temperature gradient ...
In the present work different mechanisms for generation and suppression of turbulence are studied. T...
Plasma turbulence driven by drift wave instabilities is a key issue for understanding ...
Recently, we investigated the interaction between broadband drift mode turbulence and zonal flows ne...
"In this paper, we analyze the turbulence composed of collective modes with different scale lengths....
The role of large-scale fluctuation structures in electrostatic drift-wave-type plasma turbulence is...
Nonlinear interplay of the electron temperature gradient (ETG) modes and the trapped electron modes ...
Drift wave turbulence, in general a balance between E x B drift turbulence in planes perpendicular t...
International audienceGyrokinetic simulations in a closed fieldline geometry are presented to explor...
The properties of streamers and zonal magnetic structures in magnetic electron drift mode turbulence...
In electrically neutral fluids or in plasma flows the presence of nonlinear interactions can lead to...
Multi-scale methods are utilized within the context of strongly magnetized plasmas to describe the i...
Abstract. The present work addresses the issue of identifying the major non-linear physics processes...