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Random forcing with a constant power input for two-dimensional gyrokinetic simulations

Published online by Cambridge University Press:  24 March 2021

Ryusuke Numata
Affiliation:
Graduate School of Simulation Studies, University of Hyogo, 7-1-28 Minatojima Minami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
Corresponding
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Abstract

A method of random forcing with a constant power input for two-dimensional gyrokinetic turbulence simulations is developed for the study of stationary plasma turbulence. The property that the forcing term injects the energy at a constant rate enables turbulence to be set up in the desired range and energy dissipation channels to be assessed quantitatively in a statistically steady state. Using the developed method, turbulence is demonstrated in the large-scale fluid and small-scale kinetic regimes, where the theoretically predicted scaling laws are reproduced successfully.

Type
Research Article
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press.

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References

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Random forcing with a constant power input for two-dimensional gyrokinetic simulations
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