Results 31 to 40 of about 6,989 (307)
Numerical Simulations of Jets from Active Galactic Nuclei
Galaxies, 2019 Numerical simulations have been playing a crucial role in the understanding of jets from active galactic nuclei (AGN) since the advent of the first theoretical models for the inflation of giant double radio galaxies by continuous injection in the late ...
José-María Martí
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Comparing 3D spectroscopic observations with galaxies from cosmological hydrodynamical simulations [PDF]
, 2019 Cosmological hydrodynamical simulations are rich tools to understand the role and impact of galaxy environment and mergers, and gas dynamics and stellar kinematics in galaxy formation and evolution.
van de Sande, Jesse, None
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A Self-gravity Module for the PLUTO Code
The Astrophysical Journal Supplement Series, 2023 We present a novel implementation of an iterative solver for the solution of Poisson’s equation in the PLUTO code for astrophysical fluid dynamics. Our solver relies on a relaxation method in which convergence is sought as the steady-state solution of a ...
Ankush Mandal +2 more
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Simulating Brownian suspensions with fluctuating hydrodynamics [PDF]
The Journal of Chemical Physics, 2015 Fluctuating hydrodynamics has been successfully combined with several computational methods to rapidly compute the correlated random velocities of Brownian particles. In the overdamped limit where both particle and fluid inertia are ignored, one must also account for a Brownian drift term in order to successfully update the particle positions.
Blaise Delmotte, Eric E. Keaveny
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The galaxy size to halo spin relation of disc galaxies in cosmological hydrodynamical simulations [PDF]
, 2023 In the standard disc galaxy formation model, the sizes of galactic discs are tightly related to the spin parameters λ of their dark matter haloes. The model has been wildly adopted by various semi-analytical galaxy formation models which have been ...
Gao, L +6 more
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A Universal Equation to Predict Ωm from Halo and Galaxy Catalogs
The Astrophysical Journal, 2023 We discover analytic equations that can infer the value of Ω _m from the positions and velocity moduli of halo and galaxy catalogs. The equations are derived by combining a tailored graph neural network (GNN) architecture with symbolic regression.
Helen Shao +16 more
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Simulating self-gravitating hydrodynamic flows [PDF]
Computer Physics Communications, 1995 An efficient algorithm for solving Poisson's equation in two and three spatial dimensions is discussed. The algorithm, which is described in detail, is based on the integral form of Poisson's equation and utilizes spherical coordinates and an expansion into spherical harmonics.
Müller, Ewald, Steinmetz, Matthias
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Coevolution of Dust and Chemistry in Galaxy Simulations with a Resolved Interstellar Medium
The Astrophysical Journal, 2023 Nearby dwarf irregular galaxies are ideal laboratories for studying the interstellar medium (ISM) at low metallicity, which is expected to be common for galaxies at very high redshift being observed by JWST. We present the first high-resolution (∼0.2 pc)
Chia-Yu Hu +2 more
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Numerical Simulation of Cytokinesis Hydrodynamics
ComputationA hydrodynamic homogeneous model has been developed for the motion of mutually impenetrable viscoelastic non-Newtonian fluids taking into account surface tension forces. Based on this model, numerical simulations of cytokinesis hydrodynamics were performed. The cytoplasm is considered a non-Newtonian viscoelastic fluid.
Andriy A. Avramenko +3 more
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Hydrodynamical simulations of molecular dynamics in supersonic turbulent flow [PDF]
, 2004 Here we present results from simulations of turbulence in starforming environments obtained by coupling three-dimensional hydrodynamical models with appropriate chemical processes. We investigate regimes of decaying high-speed molecular turbulence.
Pavlovski, G. +3 more
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