# Energy dynamics in a simulation of LAPD turbulence

@article{Friedman2012EnergyDI, title={Energy dynamics in a simulation of LAPD turbulence}, author={B. Friedman and Troy A. Carter and M. V. Umansky and David A. Schaffner and B. D. Dudson}, journal={Physics of Plasmas}, year={2012}, volume={19}, pages={102307} }

Energy dynamics calculations in a 3D fluid simulation of drift wave turbulence in the linear Large Plasma Device [W. Gekelman et al., Rev. Sci. Instrum. 62, 2875 (1991)] illuminate processes that drive and dissipate the turbulence. These calculations reveal that a nonlinear instability dominates the injection of energy into the turbulence by overtaking the linear drift wave instability that dominates when fluctuations about the equilibrium are small. The nonlinear instability drives flute-like…

## 26 Citations

### Nonlinear instability in simulations of Large Plasma Device turbulence

- Physics
- 2013

Several simulations of turbulence in the Large Plasma Device (LAPD) [Gekelman et al., Rev. Sci. Instrum. 62, 2875 (1991)] are energetically analyzed and compared with each other and with the…

### Understanding the impact of insulating and conducting endplate boundary conditions on turbulence in CSDX through nonlocal simulations

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- 2017

The Controlled Shear Decorrelation Experiment (CSDX) linear plasma device provides a unique platform for investigating the underlying physics of self-regulating drift-wave turbulence/zonal flow…

### Nonlinear Simulation, Validation Study, and Uncertainty Quantification of Drift-turbulence in CSDX Linear Plasma Device

- Physics
- 2017

Author(s): Vaezi, Payam | Advisor(s): Tynan, George R | Abstract: The Controlled Shear Decorrelation Experiment (CSDX) linear plasma device provides a unique platform for investigating the underlying…

### Simulations of drift resistive ballooning L-mode turbulence in the edge plasma of the DIII-D tokamaka)

- Physics
- 2013

Results from simulations of electromagnetic drift-resistive ballooning turbulence for tokamak edge turbulence in realistic single-null geometry are reported. The calculations are undertaken with the…

### Generalized universal instability: transient linear amplification and subcritical turbulence

- PhysicsJournal of Plasma Physics
- 2015

In this work we numerically demonstrate both significant transient (i.e. non-modal) linear amplification and sustained nonlinear turbulence in a kinetic plasma system with no unstable eigenmodes. The…

### Nonlinear competition of turbulent structures and improved confinement in magnetized cylindrical plasmas

- Physics, Engineering
- 2014

Nonlinear competition of turbulent structures and their roles in transport are investigated by using three-dimensional simulation code of resistive drift wave turbulence in magnetized cylindrical…

### Intrinsic suppression of turbulence in linear plasma devices

- Physics
- 2017

Plasma turbulence is the dominant transport mechanism for heat and particles in magnetised plasmas in linear devices and tokamaks, so the study of turbulence is important in limiting and controlling…

### Three-dimensional two-fluid Braginskii simulations of the large plasma device

- Physics
- 2015

The Large Plasma Device (LAPD) is modeled using the 3D Global Braginskii Solver code. Comparisons to experimental measurements are made in the low-bias regime in which there is an intrinsic E × B…

### Gyrokinetic continuum simulation of turbulence in a straight open-field-line plasma

- PhysicsJournal of Plasma Physics
- 2017

Five-dimensional gyrokinetic continuum simulations of electrostatic plasma turbulence in a straight, open-field-line geometry have been performed using a full- $f$ discontinuous-Galerkin approach…

### Turbulence and transport suppression scaling with flow shear on the Large Plasma Devicea)

- Physics
- 2013

Continuous control over azimuthal flow and shear in the edge of the Large Plasma Device (LAPD) [W. Gekelman et al., Rev. Sci. Instr. 62, 2875 (1991)] has been achieved using a biasable limiter. This…

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