Simulating Hydrodynamics in Cosmology with CRK-HACC
arXiv:2202.02840 · doi:10.3847/1538-4365/aca58d
Abstract
We introduce CRK-HACC, an extension of the Hardware/Hybrid Accelerated Cosmology Code (HACC), to resolve gas hydrodynamics in large-scale structure formation simulations of the universe. The new framework couples the HACC gravitational N-body solver with a modern smoothed particle hydrodynamics (SPH) approach called CRKSPH. onservative eproducing ernel utilizes smoothing functions that exactly interpolate linear fields while manifestly preserving conservation laws (momentum, mass, and energy). The CRKSPH method has been incorporated to accurately model baryonic effects in cosmology simulations - an important addition targeting the generation of precise synthetic sky predictions for upcoming observational surveys. CRK-HACC inherits the codesign strategies of the HACC solver and is built to run on modern GPU-accelerated supercomputers. In this work, we summarize the primary solver components and present a number of standard validation tests to demonstrate code accuracy, including idealized hydrodynamic and cosmological setups, as well as self-similarity measurements.
References in corpus (20)
- The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
- Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
- Simulating galaxy formation with black hole driven thermal and kinetic feedback
- A unified model for AGN feedback in cosmological simulations of structure formation
- Smoothed Particle Hydrodynamics and Magnetohydrodynamics
- Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
- Effects of Baryons and Dissipation on the Matter Power Spectrum
- Modelling discontinuities and Kelvin-Helmholtz instabilities in SPH
- Inviscid SPH
- The Halo Mass Function: High-Redshift Evolution and Universality
- Astrophysical Smooth Particle Hydrodynamics
- Large-scale dark matter simulations
- On the Origin of Cores in Simulated Galaxy Clusters
- An Exact Integration Scheme for Radiative Cooling in Hydrodynamical Simulations
- Baryons, Neutrinos, Feedback and Weak Gravitational Lensing
- Einasto Profiles and the Dark Matter Power Spectrum
- Accurate initial conditions in mixed Dark Matter--Baryon simulations
- The role of the artificial conductivity in SPH simulations of galaxy clusters: effects on the ICM properties
- Farpoint: A High-Resolution Cosmology Simulation at the Gigaparsec Scale
- Examining the Accuracy of Astrophysical Disk Simulations With a Generalized Hydrodynamical Test Problem