An overview of the physics of intrinsic torque is presented, with special emphasis on the
phenomenology of intrinsic toroidal rotation in tokamaks, its theoretical understanding, and …

Poloidal and toroidal rotation has been recognized to play an important role in heat transport
and magnetohydrodynamic (MHD) stability in tokamaks and helical systems. It is well known …

We investigate the dynamics of the low (L)→ high (H) transition using a time-dependent, one
dimensional (in radius) model which self-consistently describes the time evolution of zonal …

We present a gyrokinetic theory of self-generated E× B vortex flows in a magnetic island in a
collisionless tokamak plasma with a background vortex flow. We find that the long-term …

We present a gyrokinetic theory of an E× B vortex flow in a magnetic island self-generated
from turbulence in a collisionless tokamak plasma. We have found that after fast collisionless …

Generation of zonal flow in parallel flow shear driven turbulence is discussed. Nonlinear
dynamics is formulated by calculating energy transfer in the wave number space. It is shown …

We develop a tokamak plasma turbulence simulation code based on a fluid model using the
BOUT++ framework. The model corresponds to a global extension of the local gyrofluid …

The role of parallel shear flow in the pattern selection problem in drift wave turbulence is
discussed. Patterns of interest here are E× B convective cells, which include poloidally …

Since ITER will operate close to threshold and with limited control, the H→ L back transition
is a topic important for machine operations as well as physics. Using a reduced mesoscale …

Using a global gyrofluid code, we conduct comprehensive flux-driven simulations
incorporating external heat and momentum sources/sinks. They involve an external torque …