72 citations · 370 across the 16 of their papers we have counts for
5 papers · 1 filter
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…
Consistency in Drift-ordered Fluid Equations
Jakob Gath, Matthias Wiesenberger
We address several concerns related to the derivation of drift-ordered fluid equations. Starting from a fully Galilean invariant fluid system, we show how consistent sets of pertur…
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…
Reproducibility, accuracy and performance of the Feltor code and library on parallel computer architectures
Matthias Wiesenberger, Lukas Einkemmer, Markus Held +3
Feltor is a modular and free scientific software package. It allows developing platform independent code that runs on a variety of parallel computer architectures ranging from lapt…
Streamline integration as a method for structured grid generation in X-point geometry
M. Wiesenberger, M. Held, L. Einkemmer +1
We investigate structured grids aligned to the contours of a two-dimensional flux-function with an X-point (saddle point). Our theoretical analysis finds that orthogonal grids exis…