18 citations · 61 across the 6 of their papers we have counts for
6 papers
Exploring the Formation of Resistive Pseudodisks with the GPU Code Astaroth
Miikka S. Väisälä, Hsien Shang, Daniele Galli +2
Pseudodisks are dense structures formed perpendicular to the direction of the magnetic field during the gravitational collapse of a molecular cloud core. Numerical simulations of t…
Scalable communication for high-order stencil computations using CUDA-aware MPI
Johannes Pekkilä, Miikka S. Väisälä, Maarit J. Käpylä +2
Modern compute nodes in high-performance computing provide a tremendous level of parallelism and processing power. However, as arithmetic performance has been observed to increase…
Interaction of large- and small-scale dynamos in isotropic turbulent flows from GPU-accelerated simulations
Miikka S. Väisälä, Johannes Pekkilä, Maarit J. Käpylä +3
Magnetohydrodynamical (MHD) dynamos emerge in many different astrophysical situations where turbulence is present, but the interaction between large-scale (LSD) and small-scale dyn…
Time Evolution of 3D Disk Formation with Misaligned Magnetic Field and Rotation Axes
Miikka S. Väisälä, Hsien Shang, Ruben Krasnopolsky +3
Distinguishing diagnostic observational signatures produced by MHD models is essential in understanding the physics for the formation of protostellar disks in the ALMA era. Develop…
Methods for compressible fluid simulation on GPUs using high-order finite differences
Johannes Pekkilä, Miikka S. Väisälä, Maarit J. Käpylä +2
We focus on implementing and optimizing a sixth-order finite-difference solver for simulating compressible fluids on a GPU using third-order Runge-Kutta integration. Since graphics…
Quantifying the effect of turbulent magnetic diffusion on the growth rate of the magneto-rotational instability
M. S. Väisälä, A. Brandenburg, Dhrubaditya Mitra +2
In astrophysics, turbulent diffusion is often used in place of microphysical diffusion to avoid resolving the small scales. However, we expect this approach to break down when time…