Corpus ID: 235390801

Projecting SPH Particles in Adaptive Environments

@inproceedings{Borrow2021ProjectingSP,
  title={Projecting SPH Particles in Adaptive Environments},
  author={J. Borrow and Ashley J. Kelly},
  year={2021}
}
The reconstruction of a smooth field onto a fixed grid is a necessary step for direct comparisons to various real-world observations. Projecting SPH data onto a fixed grid becomes challenging in adaptive environments, where some particles may have smoothing lengths far below the grid size, whilst others are resolved by thousands of pixels. In this paper we show how the common approach of treating particles below the grid size as Monte Carlo tracers of the field leads to significant… Expand

Figures from this paper

References

SHOWING 1-10 OF 19 REFERENCES
Sphenix: Smoothed Particle Hydrodynamics for the next generation of galaxy formation simulations
Smoothed Particle Hydrodynamics (SPH) is a ubiquitous numerical method for solving the fluid equations, and is prized for its conservation properties, natural adaptivity, and simplicity. We introduceExpand
Insights from Synthetic Star-forming Regions: I. Reliable Mock Observations from SPH Simulations
Through synthetic observations of a hydrodynamical simulation of an evolving star-forming region, we assess how the choice of observational techniques affects the measurements of properties whichExpand
Improving convergence in smoothed particle hydrodynamics simulations without pairing instability
The numerical convergence of smoothed particle hydrodynamics (SPH) can be severely restricted by random force errors induced by particle disorder, especially in shear flows, which are ubiquitous inExpand
Fast and accurate Voronoi density gridding from Lagrangian hydrodynamics data
TLDR
An expression for the integral of a cubic spline kernel over the volume of a Voronoi cell and link it to the density of the cell is derived and can be applied more broadly to integrate a spherically symmetric polynomial function over thevolume of a random polyhedron. Expand
SPLASH: An Interactive Visualisation Tool for Smoothed Particle Hydrodynamics Simulations
  • Daniel J. Price
  • Physics, Computer Science
  • Publications of the Astronomical Society of Australia
  • 2007
Abstract This paper presents SPLASH, a publicly available interactive visualisation tool for Smoothed Particle Hydrodynamics (SPH) simulations. Visualisation of SPH data is more complicated than forExpand
The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
We introduce the Virgo Consortium's EAGLE project, a suite of hydrodynamical simulations that follow the formation of galaxies and black holes in representative volumes. We discuss the limitations ofExpand
Simulating galactic outflows with thermal supernova feedback
Cosmological simulations make use of sub-grid recipes for the implementation of galactic winds driven by massive stars because direct injection of supernova energy in thermal form leads to strongExpand
yt: A MULTI-CODE ANALYSIS TOOLKIT FOR ASTROPHYSICAL SIMULATION DATA
The analysis of complex multiphysics astrophysical simulations presents a unique and rapidly growing set of challenges: reproducibility, parallelization, and vast increases in data size andExpand
SWIFT: Maintaining weak-scalability with a dynamic range of 104 in time-step size to harness extreme adaptivity
TLDR
The extreme adaptivity that cosmological simulations present is tackled in three main ways through the use of the code SWIFT, including an adaptive mesh used to ensure that only the relevant particles are interacted in a given time-step, and a domain decomposition strategy that bisects the work that must be performed by the simulation between nodes using MPI. Expand
On the relation between the Schmidt and Kennicutt-Schmidt star formation laws and its implications for numerical simulations
When averaged over large scales, star formation in galaxies is observed to follow the empirical Kennicutt-Schmidt (KS) law for surface densities above a constant threshold. While the observed lawExpand
...
1
2
...