5 papers · 1 filter
GREENY: A Full-F 2D Gyrofluid Reconnection Code
F. F. Locker, M. Held, T. Stocker-Waldhuber +3
We present the 2D gyrofluid magnetic reconnection code GREENY (Gyrofluid Reconnection with Extended Electromagnetic Nonlinearity). After a brief introduction to gyrofluids, magneti…
Angular momentum and rotational energy of meanflows in toroidal magnetic fields
Matthias Wiesenberger, Markus Held
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 mo…
Padé-based arbitrary wavelength polarization closures for full-F gyro-kinetic and -fluid models
Markus Held, Matthias Wiesenberger, Alexander Kendl
We propose a solution to the long-standing short wavelength polarization closure shortfall of full-F gyro-fluid models. This is achieved by first finding an appropriate quadratic f…
The collisional drift wave instability in steep density gradient regimes
Markus Held, Matthias Wiesenberger, Alexander Kendl
The collisional drift wave instability in a straight magnetic field configuration is studied within a full-F gyro-fluid model, which relaxes the Oberbeck-Boussinesq (OB) approximat…
Non-Oberbeck-Boussinesq zonal flow generation
Markus Held, Matthias Wiesenberger, Ralph Kube +1
Novel mechanisms for zonal flow (ZF) generation for both large relative density fluctuations and background density gradients are presented. In this non-Oberbeck-Boussinesq (NOB) r…