Results 1 to 10 of about 1,291 (149)
Low-surface-brightness Galaxies are Missing in the Observed Stellar Mass Function
The Astrophysical Journal, 2023 We investigate the impact of the surface-brightness (SB) limit on the galaxy stellar mass functions (GSMFs) using galaxy catalogs generated from the Horizon Run 5 ( HR5 ) simulation.
Juhan Kim +10 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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Hydrodynamic simulations with the Godunov smoothed particle hydrodynamics [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 We present results based on an implementation of the Godunov smoothed particle hydrodynamics (GSPH), originally developed by Inutsuka, in the gadget-3 hydrodynamic code. We first review the derivation of the GSPH discretization of the equations of moment and energy conservation, starting from the convolution of these equations with the interpolating ...
Murante G. +3 more
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Mesoscale simulations of hydrodynamic squirmer interactions [PDF]
Physical Review E, 2010 The swimming behavior of self-propelled microorganisms is studied by particle-based mesoscale simulations. The simulation technique includes both hydrodynamics and thermal fluctuations that are both essential for the dynamics of microswimmers. The swimmers are modeled as squirmers, i.e., spherical objects with a prescribed tangential surface velocity ...
Götze, I., Gompper, G.
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Machine learning and cosmological simulations – II. Hydrodynamical simulations [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 20 pages, 27 figures, 6 tables.
Kamdar, Harshil M. +2 more
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The Mass Fractionation of Helium in the Escaping Atmosphere of HD 209458b
The Astrophysical Journal, 2023 The absorption signals of metastable He in HD 209458b and several other exoplanets can be explained via an escaping atmosphere model with a subsolar He/H ratio. The low abundance of helium can be a result of planet formation if there is a small amount of
Lei Xing, Dongdong Yan, Jianheng Guo
doaj +1 more source
Hydrodynamic Drag in Cosmological Simulations
The Astrophysical Journal, 2001 35 pages including 3 tables and 9 figures. Submitted to MNRAS.
Tittley, Eric R. +2 more
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The Athena++ Adaptive Mesh Refinement Framework: Multigrid Solvers for Self-gravity
The Astrophysical Journal Supplement Series, 2023 We describe the implementation of multigrid solvers in the Athena++ adaptive mesh refinement (AMR) framework and their application to the solution of the Poisson equation for self-gravity.
Kengo Tomida, James M. Stone
doaj +1 more source
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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Granular clustering in a hydrodynamic simulation [PDF]
Physical Review E, 2003 4 pages, 5 ...
Hill, Scott A., Mazenko, Gene F.
openaire +4 more sources