How pattern is selected in drift wave turbulence: Role of parallel flow shear

2017 ◽  
Vol 24 (12) ◽  
pp. 122305 ◽  
Author(s):  
Y. Kosuga
Keyword(s):  
Parallel Flow ◽  
Wave Turbulence ◽  
Flow Shear ◽  
Drift Wave Turbulence ◽  
Drift Wave

scholarly journals Role of phase space structures in collisionless drift wave turbulence and impact on transport modeling

2017 ◽  
Vol 57 (7) ◽  
pp. 072006 ◽  
Author(s):  
Y. Kosuga ◽  
S.-I. Itoh ◽  
P.H. Diamond ◽  
K. Itoh ◽  
M. Lesur
Keyword(s):  
Phase Space ◽  
Transport Modeling ◽  
Space Structures ◽  
Wave Turbulence ◽  
Drift Wave Turbulence ◽  
Drift Wave

scholarly journals Investigation of tokamak turbulent avalanches using wave-kinetic formulation in toroidal geometry

2021 ◽  
Vol 87 (2) ◽  
Author(s):  
Camille Gillot ◽  
Guilhem Dif-Pradalier ◽  
Xavier Garbet ◽  
Olivier Panico ◽  
Yanick Sarazin ◽  
...  
Keyword(s):  
Coupled System ◽  
Wave Turbulence ◽  
Ion Temperature ◽  
Flow Shear ◽  
Ion Temperature Gradient ◽  
Kinetic Formulation ◽  
Drift Wave Turbulence ◽  
Drift Wave ◽  
Low Field ◽  
Primary Driver

The interplay between toroidal drift-wave turbulence and tokamak profiles is investigated using a wave-kinetic description. The coupled system is used to investigate the interplay between marginally stable toroidal drift-wave turbulence and geodesic acoustic modes (GAMs). The coupled system is found to be unstable. Notably, the most unstable mode corresponds to the resonance between the turbulent wave radial group velocity and the GAM phase velocity. For a low-field-side ballooned drift-wave growth, a background flow shear breaks the symmetry between inwards- and outwards-travelling instabilities. Although this turbulence–GAM coupling may not be the primary driver for avalanches in standard core ion temperature gradient simulations, this mechanism is generic and displays many of the expected features, and should be of interest in several other regimes, which include towards the edge or in the presence of energetic particles.

scholarly journals Three‐dimensional collisional drift‐wave turbulence: Role of magnetic shear

1996 ◽  
Vol 3 (11) ◽  
pp. 3947-3956 ◽  
Author(s):  
A. Zeiler ◽  
D. Biskamp ◽  
J. F. Drake
Keyword(s):  
Three Dimensional ◽  
Wave Turbulence ◽  
Magnetic Shear ◽  
Drift Wave Turbulence ◽  
Drift Wave

scholarly journals The role of coherent vorticity in turbulent transport in resistive drift-wave turbulence

2008 ◽  
Vol 15 (7) ◽  
pp. 072305 ◽  
Author(s):  
W. J. T. Bos ◽  
S. Futatani ◽  
S. Benkadda ◽  
M. Farge ◽  
K. Schneider
Keyword(s):  
Turbulent Transport ◽  
Wave Turbulence ◽  
Drift Wave Turbulence ◽  
Drift Wave

Role of clumps in drift-wave turbulence

1978 ◽  
Vol 21 (5) ◽  
pp. 783 ◽  
Author(s):  
Thomas H. Dupree
Keyword(s):  
Wave Turbulence ◽  
Drift Wave Turbulence ◽  
Drift Wave

Theory of electric‐field curvature effects on long‐wavelength drift wave turbulence

1994 ◽  
Vol 1 (5) ◽  
pp. 1142-1153 ◽  
Author(s):  
K. L. Sidikman ◽  
B. A. Carreras ◽  
P. H. Diamond ◽  
L. Garcia
Keyword(s):  
Electric Field ◽  
Wave Turbulence ◽  
Long Wavelength ◽  
Drift Wave Turbulence ◽  
Curvature Effects ◽  
Drift Wave ◽  
Field Curvature

Resistive coupling in drift wave turbulence

1996 ◽  
Vol 38 (12) ◽  
pp. 2143-2154 ◽  
Author(s):  
Thomas Sunn Pedersen ◽  
Poul K Michelsen ◽  
Jens Juul Rasmussen
Keyword(s):  
Wave Turbulence ◽  
Drift Wave Turbulence ◽  
Drift Wave
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