Intrinsic parallel rotation drive by electromagnetic ion temperature gradient turbulence

@article{Peng2016IntrinsicPR,
  title={Intrinsic parallel rotation drive by electromagnetic ion temperature gradient turbulence},
  author={Shuitao Peng and Lu Wang and Yuan Yuan Pan},
  journal={Nuclear Fusion},
  year={2016},
  volume={57}
}
The quasilinear intrinsic parallel flow drive including parallel residual stress, kinetic stress, cross Maxwell stress and parallel turbulent acceleration by electromagnetic ion temperature gradient (ITG) turbulence is calculated analytically using electromagnetic gyrokinetic theory. Both the kinetic stress and cross Maxwell stress also enter the mean parallel flow velocity equation via their divergence, as for the usual residual stress. The turbulent acceleration driven by ion pressure… 

Gyrokinetic theory of turbulent acceleration and momentum conservation in tokamak plasmas

Understanding the generation of intrinsic rotation in tokamak plasmas is crucial for future fusion reactors such as ITER. We proposed a new mechanism named turbulent acceleration for the origin of

Ion heat and parallel momentum transport by stochastic magnetic fields and turbulence

The theory of turbulent transport of parallel momentum and ion heat by the interaction of stochastic magnetic fields and turbulence is presented. Attention is focused on determining the kinetic

Intrinsic current driven by electromagnetic electron temperature gradient turbulence in tokamak plasmas

The mean parallel current density evolution equation is presented using the electromagnetic (EM) gyrokinetic equation. There are two types of intrinsic current driving mechanisms resulting from EM

Theory of mean E × B shear in a stochastic magnetic field: ambipolarity breaking and radial current

The mean E × B shear in a stochastic magnetic field is calculated, using the radial force balance relation and transport equations. This analysis is relevant to the L → H transition with resonant

Angular momentum and rotational energy of mean flows in toroidal magnetic fields

We derive the balance equation for the Favre averaged angular momentum in toroidal not necessarily axisymmetric magnetic field equilibria. We find that the components of angular momentum are given by

Intrinsic current driven by electromagnetic electron drift wave turbulence in the tokamak pedestal region

The local intrinsic parallel current density driven by electron drift wave (DW) turbulence including electromagnetic (EM) effects is analytically studied. The scalings of the ratios of intrinsic

Summary of the fundamental plasma physics session in the first AAPPS-DPP conference

Understanding of fundamental plasma physics contributes to progress in plasma science in many fields, such as magnetic confinement fusion, solar/space physics and application of plasma techniques.

Summary of the 8th Asia-Pacific Transport Working Group (APTWG) Meeting

This conference report gives a summary on the contributed papers and discussions presented at the 8th Asia-Pacific Transport Working Group Meeting held at the Engineering & Technical College of

References

SHOWING 1-10 OF 34 REFERENCES

Intrinsic rotation drive by collisionless trapped electron mode turbulence

Both the parallel residual stress and parallel turbulent acceleration driven by electrostatic collisionsless trapped electron mode (CTEM) turbulence are calculated analytically using gyrokinetic

Anomalous momentum transport from drift wave turbulence

A sheared slab magnetic field model B=B0[ẑ+(x/Ls)ŷ], with inhomogeneous flows in the ŷ and ẑ directions, is used to perform a fully kinetic stability analysis of the ion temperature gradient (ITG)

Gyrokinetic theory of turbulent acceleration of parallel rotation in tokamak plasmas.

A mechanism for turbulent acceleration of parallel rotation is discovered using gyrokinetic theory and constitutes a new candidate for the origin of spontaneous rotation, independent of mean rotation and mean rotation gradient.

Electromagnetic theory of turbulent acceleration of parallel flow and momentum conservation

Intrinsic flow in plasma physics is a long-standing puzzle, since it is difficult to understand its origin without contradiction to momentum conservation in conventional wisdom. It is proved that the

Transport of parallel momentum by drift-Alfvén turbulence

An electromagnetic gyrokinetic formulation is utilized to calculate the turbulent radial flux of parallel momentum for a strongly magnetized plasma in the large aspect ratio limit. For low-β plasmas,

Three-Dimensional Computation of Drift Alfven Turbulence

A transcollisional, electromagnetic fluid model, incorporating the parallel heat flux as a dependent variable, is constructed to treat electron drift turbulence in the regime of tokamak edge plasmas

Enhancement of residual stress by electromagnetic fluctuations: A quasi-linear study

A study is conducted on the impact of electromagnetic (EM) fluctuations on residual Reynolds stress in the context of the quasi-linear theory. We employ a fluid formulation describing EM ion

Turbulent acceleration and heating in toroidal magnetized plasmas

It is shown that turbulence is responsible for a source of momentum, which cannot be recast as a divergence of a momentum flux. This process is similar to turbulent heating, with similar properties.

Intrinsic rotation and electric field shear

A novel mechanism for the generation and amplification of intrinsic rotation at the low-mode to high-mode transition is presented. The mechanism is one where the net parallel flow is accelerated by

Residual parallel Reynolds stress due to turbulence intensity gradient in tokamak plasmas

A novel mechanism for driving residual stress in tokamak plasmas based on k∥ symmetry breaking by the turbulence intensity gradient is proposed. The physics of this mechanism is explained and its