Random forcing with a constant power input for two-dimensional gyrokinetic simulations. (24th April 2021)

• Record Type: Journal Article
• Authors: Numata, Ryusuke
• Is Part Of: Journal of plasma physics. Volume 87:Number 2(2021)
• Publication Date: 2021-04-24
• Subjects: plasma nonlinear phenomena; Plasma (Ionized gases) -- Periodicals; 530.4405
• DOI: 10.1017/S0022377821000192
• Languages: English
• ISSNs: 0022-3778

Abstract

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.