Block Structured Adaptive Mesh and Time Refinement for Hybrid, Hyperbolic + N-body Systems

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dc.creatorMiniati, Francesco
dc.creatorColella, Phillip
dc.date2006-08-07
dc.date2007-08-11
dc.date.accessioned2026-07-07T11:04:07Z
dc.date.available2026-07-07T11:04:07Z
dc.descriptionWe present a new numerical algorithm for the solution of coupled collisional and collisionless systems, based on the block structured adaptive mesh and time refinement strategy (AMR). We describe the issues associated with the discretization of the system equations and the synchronization of the numerical solution on the hierarchy of grid levels. We implement a code based on a higher order, conservative and directionally unsplit Godunov's method for hydrodynamics; a symmetric, time centered modified symplectic scheme for collisionless component; and a multilevel, multigrid relaxation algorithm for the elliptic equation coupling the two components. Numerical results that illustrate the accuracy of the code and the relative merit of various implemented schemes are also presented.
dc.description40 pages, 10 figures, JPC in press. Extended the code test section, new convergence tests, several typos corrected. Full resolution version available at http://www.exp-astro.phys.ethz.ch/miniati/charm.pdf
dc.identifierhttps://arxiv.org/abs/astro-ph/0608156
dc.identifierhttp://arxiv.org/abs/astro-ph/0608156
dc.identifierJ.Comput.Phys.227:400-430,2007
dc.identifierdoi:10.1016/j.jcp.2007.07.035
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188783
dc.subjectAstrophysics
dc.titleBlock Structured Adaptive Mesh and Time Refinement for Hybrid, Hyperbolic + N-body Systems
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