Fluid simulation of tokamak ion temperature gradient turbulence with zonal flow closure model

2016 ◽  
Vol 23 (3) ◽  
pp. 032305 ◽  
Author(s):  
Osamu Yamagishi ◽  
Hideo Sugama
Keyword(s):  
Temperature Gradient ◽  
Zonal Flow ◽  
Fluid Simulation ◽  
Ion Temperature ◽  
Closure Model ◽  
Ion Temperature Gradient ◽  
Flow Closure

scholarly journals Coherent structures in ion temperature gradient turbulence-zonal flow

2014 ◽  
Vol 21 (10) ◽  
pp. 102306 ◽  
Author(s):  
Rameswar Singh ◽  
R. Singh ◽  
P. Kaw ◽  
Ö. D. Gürcan ◽  
P. H. Diamond
Keyword(s):  
Temperature Gradient ◽  
Coherent Structures ◽  
Zonal Flow ◽  
Ion Temperature ◽  
Ion Temperature Gradient

Global structure of zonal flow and electromagnetic ion temperature gradient driven turbulence in tokamak plasmas

2004 ◽  
Vol 11 (12) ◽  
pp. 5557-5564 ◽  
Author(s):  
Naoaki Miyato ◽  
Yasuaki Kishimoto ◽  
Jiquan Li
Keyword(s):  
Temperature Gradient ◽  
Zonal Flow ◽  
Global Structure ◽  
Tokamak Plasmas ◽  
Ion Temperature ◽  
Ion Temperature Gradient

scholarly journals Understanding nonlinear saturation in zonal-flow-dominated ion temperature gradient turbulence

2015 ◽  
Vol 57 (4) ◽  
pp. 045005 ◽  
Author(s):  
G G Plunk ◽  
A Bañón Navarro ◽  
F Jenko
Keyword(s):  
Temperature Gradient ◽  
Zonal Flow ◽  
Ion Temperature ◽  
Nonlinear Saturation ◽  
Ion Temperature Gradient

scholarly journals Effects of parallel ion motion on zonal flow generation in ion-temperature-gradient mode turbulence

2007 ◽  
Vol 14 (8) ◽  
pp. 082313 ◽  
Author(s):  
J. Anderson ◽  
J. Li ◽  
Y. Kishimoto
Keyword(s):  
Temperature Gradient ◽  
Zonal Flow ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Ion Motion ◽  
Flow Generation ◽  
Gradient Mode

scholarly journals Secondary instability of electromagnetic ion-temperature-gradient modes for zonal flow generation

2011 ◽  
Vol 18 (7) ◽  
pp. 072306 ◽  
Author(s):  
Johan Anderson ◽  
Hans Nordman ◽  
Rameswar Singh ◽  
Raghvendra Singh
Keyword(s):  
Temperature Gradient ◽  
Zonal Flow ◽  
Secondary Instability ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Flow Generation

Correlation between zonal flow shearing and entropy transfer rates in toroidal ion temperature gradient turbulence

2019 ◽  
Vol 26 (8) ◽  
pp. 082304
Author(s):  
T. Miura ◽  
T.-H. Watanabe ◽  
S. Maeyama ◽  
M. Nakata
Keyword(s):  
Temperature Gradient ◽  
Zonal Flow ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Transfer Rates ◽  
Entropy Transfer

Collisional damping for ion temperature gradient mode driven zonal flow

2007 ◽  
Vol 14 (3) ◽  
pp. 032302 ◽  
Author(s):  
Yong Xiao ◽  
Peter J. Catto ◽  
Kim Molvig
Keyword(s):  
Temperature Gradient ◽  
Zonal Flow ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Collisional Damping ◽  
Gradient Mode

Zonal flow in toroidal ion temperature gradient mode turbulence

2007 ◽  
Vol 73 (4) ◽  
pp. 565-573 ◽  
Author(s):  
INGMAR SANDBERG ◽  
V. P. PAVLENKO
Keyword(s):  
Temperature Gradient ◽  
Nonlinear Evolution ◽  
Zonal Flow ◽  
Shear Layers ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Zonal Flows ◽  
Characteristic Oscillation ◽  
The Stability ◽  
Gradient Mode

AbstractThe properties of zonal flows in the toroidal ion temperature gradient mode turbulence are investigated taking into account the polarization drift effects. The stability criterion and the characteristic oscillation frequency of the zonal flow are determined in terms of the spectra of turbulent fluctuations. The nonlinear evolution of zonal flows may lead to the formation of stationary long-lived coherent structures supporting stationary shear layers. These results indicate the existence of regions with reduced levels of anomalous transport attributed to zonal flows generalizing previous findings regarding zonal flows in electron drift turbulence.

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