Results 21 to 30 of about 1,731,437 (208)
Parallelization of a Magnetohydrodynamics Model for Plasma Simulation [PDF]
2018 IEEE 38th Central America and Panama Convention (CONCAPAN XXXVIII), 2018 Plasma simulations are inherently complex due to the numerous and intricate processes that naturally occur to matter in this state. Computer simulations and visualizations of plasma help researchers and scientists understand the physics that takes place in it.
Alvarado, Daniel +3 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
Hydrodynamic and magnetohydrodynamic simulations of wire turbulence [PDF]
High Energy Density Physics, 2019 We report on simulations of laboratory experiments in which magnetized supersonic flows are driven through a wire mesh. The goal of the study was to investigate the ability of such a configuration to generate supersonic, MHD turbulence. We first report on the morphological structures that develop in both magnetized and non-magnetized cases.
Fogerty, E +4 more
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RADIATIVE MAGNETOHYDRODYNAMIC SIMULATION OF SUNSPOT STRUCTURE [PDF]
The Astrophysical Journal, 2009 Results of a three-dimensional MHD simulation of a sunspot with a photospheric size of about 20 Mm are presented. The simulation has been carried out with the MURaM code, which includes a realistic equation of state with partial ionization and radiative transfer along many ray directions.
Rempel, M., Schüssler, M., Knölker, M.
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Influence of Crustal Magnetic Fields on Horizontal Plasma Transport and Ion Escape on Mars
The Astrophysical Journal, 2023 Owing to its unevenly distributed crustal fields, Mars acts as a unique obstacle to the solar wind. In the presence of the crustal fields, the transport of the planetary ions on the dayside ionosphere exhibits north–south asymmetry.
Guokan Li +5 more
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SIMULATIONS OF ELECTRON MAGNETOHYDRODYNAMIC TURBULENCE
The Astrophysical Journal, 2009 We present numerical simulations of electron magnetohydrodynamic (EMHD) and electron reduced MHD (ERMHD) turbulence. Comparing scaling relations, we find that both EMHD and ERMHD turbulence show similar spectra and anisotropy. We develop new techniques to study anisotropy of EMHD turbulence.
Cho, Jungyeon, Lazarian, A.
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RESISTIVE MAGNETOHYDRODYNAMICS SIMULATIONS OF THE IDEAL TEARING MODE [PDF]
The Astrophysical Journal, 2015 We study the linear and nonlinear evolution of the tearing instability on thin current sheets by means of two-dimensional numerical simulations, within the framework of compressible, resistive magnetohydrodynamics. In particular we analyze the behavior of current sheets whose inverse aspect ratio scales with the Lundquist number $S$ as $S^{-1/3}$. This
LANDI, SIMONE +4 more
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Why Monte Carlo Simulations are Inferences and not Experiments [PDF]
, 2012 Monte Carlo Simulations arrive at their results by introducing randomness, sometimes derived from a physical randomizing device. Nonetheless, we argue, they open no new epistemic channels beyond that already employed by traditional simulations: the ...
John D. Norton +3 more
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Implementation of Chemistry in the Athena++ Code
The Astrophysical Journal Supplement Series, 2023 Chemistry plays a key role in many aspects of astrophysical fluids. Atoms and molecules are agents for heating and cooling, determine the ionization fraction, serve as observational tracers, and build the molecular foundation of life.
Munan Gong +8 more
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Three-dimensional magnetohydrodynamic simulations of the Crab nebula [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 In this paper we give a detailed account of the first 3D relativistic magnetohydrodynamic (MHD) simulations of Pulsar Wind Nebulae (PWN), with parameters most suitable for the Crab Nebula. In order to clarify the new features specific to 3D models, reference 2D simulations have been carried out as well.
O. Porth, S. S. Komissarov, R. Keppens
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