24 citations · 115 across the 9 of their papers we have counts for
4 papers · 1 filter
APSARA: A multi-dimensional unsplit fourth-order explicit Eulerian hydrodynamics code for arbitrary curvilinear grids
Annop Wongwathanarat, Hannes Grimm-Strele, Ewald Müller
We present a new fourth-order, finite-volume hydrodynamics code named Apsara. The code employs a high-order, finite-volume method for mapped coordinates with extensions for nonline…
Achievable Efficiency of Numerical Methods for Simulations of Solar Surface Convection
Hannes Grimm-Strele, Friedrich Kupka, Herbert J. Muthsam
We investigate the achievable efficiency of both the time and the space discretisation methods used in Antares for mixed parabolic-hyperbolic problems. We show that the fifth order…
Curvilinear Grids for WENO Methods in Astrophysical Simulations
Hannes Grimm-Strele, Friedrich Kupka, Herbert J. Muthsam
We investigate the applicability of curvilinear grids in the context of astrophysical simulations and WENO schemes. With the non-smooth mapping functions from Calhoun et al. (2008)…
A Low Mach Number Solver: Enhancing Applicability
Natalie Happenhofer, Hannes Grimm-Strele, Friedrich Kupka +2
In astrophysics and meteorology there exist numerous situations where flows exhibit small velocities compared to the sound speed. To overcome the stringent timestep restrictions po…