TITLE

Nonlinear low noise particle-in-cell simulations of electron temperature gradient driven turbulence

AUTHOR(S)
Bottino, A.; Peeters, A. G.; Hatzky, R.; Jolliet, S.; McMillan, B. F.; Tran, T. M.; Villard, L.
PUB. DATE
January 2007
SOURCE
Physics of Plasmas;Jan2007, Vol. 14 Issue 1, p010701
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this Letter, it is shown that global, nonlinear, particle-in-cell (PIC) simulations of electron temperature driven turbulence recover the same level of transport as flux-tube codes when the level of statistical noise, associated with the PIC discretization, is sufficiently small. An efficient measure of the signal-to-noise ratio, applicable to every PIC code, is introduced. This diagnostic provides a direct measure of the quality of PIC simulations and allows for the validation of analytical estimates of the numerical noise. Global simulations for values of ρe*<1/450 (normalized electron gyroradius) show no evidence of a gyro-Bohm scaling.
ACCESSION #
23893711

 

Related Articles

  • Anomalous particle pinch for collisionless plasma. Terry, P. W. // Physics of Fluids B: Plasma Physics;Sep89, Vol. 1 Issue 9, p1932 

    The particle transport arising from the convection of nonadiabatic electron density by ion temperature gradient driven turbulence is examined for trapped electron collisionality regimes. In the lower temperature end of this regime, trapped electrons are collisional and the particle flux is...

  • Statistical analysis of fluctuations and noise-driven transport in particle-in-cell simulations of plasma turbulence. Holod, I.; Lin, Z. // Physics of Plasmas;Mar2007, Vol. 14 Issue 3, p032306 

    The problem of discrete particle noise has been studied based on direct fluctuation measurements from gyrokinetic particle-in-cell simulations of stable plasmas. From the statistical analysis of electrostatic potential time evolution, the space-time correlation function has been measured....

  • Long global gyrokinetic simulations: Source terms and particle noise control. McMillan, B. F.; Jolliet, S.; Tran, T. M.; Villard, L.; Bottino, A.; Angelino, P. // Physics of Plasmas;May2008, Vol. 15 Issue 5, p052308 

    In global gyrokinetic simulations it takes a long time for the turbulence to reach a quasisteady state, and quantitative predictions about the quasisteady state turbulence have been difficult to obtain computationally. In particular, global particle-in-cell gyrokinetic simulations have been...

  • Determination of the electron anomalous mobility through measurements of turbulent magnetic field in Hall thrusters. Lazurenko, A.; de Wit, T. Dudok; Cavoit, C.; Krasnoselskikh, V.; Bouchoule, A.; Dudeck, M. // Physics of Plasmas;Mar2007, Vol. 14 Issue 3, p033504 

    Measurements of the turbulent magnetic field in a Hall thruster have been carried out between 1 kHz and 30 MHz with the aim of understanding electron transport through the magnetic field. Small detecting coils at the exit of the accelerating channel and outside of the ionic plume were used to...

  • Formation of coherent vortex streets and transport reduction in electron temperature gradient driven turbulence. Nakata, M.; Watanabe, T.-H.; Sugama, H.; Horton, W. // Physics of Plasmas;Apr2010, Vol. 17 Issue 4, p042306 

    Vortex structures in slab electron temperature gradient (ETG) driven turbulence are investigated by means of a gyrokinetic simulation with high phase-space resolution. Depending on parameters that determine the eigenfrequency of the linear ETG modes, two different flow structures, i.e.,...

  • Statistics of two-particle dispersion in two-dimensional turbulence. Boffetta, G.; Sokolov, I. M. // Physics of Fluids;Sep2002, Vol. 14 Issue 9, p3224 

    We investigate Lagrangian relative dispersion in direct numerical simulation of two-dimensional inverse cascade turbulence. The analysis is performed by using both standard fixed time statistics and an exit time approach. The latter allows a more precise determination of the Richardson constant...

  • Intermittent particle transport in two-dimensional edge turbulence. Sarazin, Y.; Ghendrih, Ph. // Physics of Plasmas;Dec98, Vol. 5 Issue 12, p4214 

    Investigates the intermittent particle transport in two-dimensional edge turbulence. Condition for the occurrence of avalanche; Reduction of the radial profile of density relative fluctuations from the wall into the core plasma; Derivation of the analytical expression of the scrape-off-layer width.

  • Particle size effects on Lagrangian turbulence. McLaughlin, John B. // Physics of Fluids (00319171);Sep88, Vol. 31 Issue 9, p2544 

    Perturbation methods are used to show that the equations of motion for a small rigid sphere in a steady laminar flow take the form of a dynamical system in which phase volume is not conserved. In the absence of stagnation points, particle inertia and virtual mass effects destroy Lagrangian...

  • Weakly turbulent electron cloud transport in a plasma with an external electric field. Kontar, E. P.; Mel’nik, V. N. // Physics of Plasmas;Jul2003, Vol. 10 Issue 7, p2732 

    The propagation of a fast electron cloud in a relatively cold and dense plasma in an electric field is investigated in the framework of weak turbulence theory. The dynamics of an electron cloud in the external electric field is studied both analytically and numerically. It is shown that...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics