An Overview of the Los Alamos Crestone Project: Uses for Astrophysical Problems

Details An Overview of the Los Alamos Crestone Project: Uses for Astrophysical Problems An Overview of the Los Alamos Crestone Project: Uses for Astrophysical Problems

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.4707w&link_type=abstract

American Astronomical Society, AAS Meeting #211, #47.07; Bulletin of the American Astronomical Society, Vol. 39, p.804

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In this overview we will discuss the SAGE and the RAGE codes developed by the Crestone team at Los Alamos National Laboratory as a multiyear development effort under the Department of Energy (DOE) Advanced Simulation and Computing (ASC) program. The SAGE (SAIC adaptive grid Eulerian) code is a one-, two-, and three-dimensional, multimaterial, Eulerian, massively parallel hydrodynamics code for use in solving a variety of high-deformation flow problems. The RAGE CAMR code is built from the SAGE code by adding various radiation packages, improved setup utilities, and graphics packages. There has been wide variety of astrophysical simulations performed with the SAGE and RAGE codes. An overview of these simulations will be shown here, including asteroid and comet impacts in the deep-ocean, asteroid impacts on the continental shelf (e.g. - Chicxulub - the dinosaur killer), calculations of massive black holes at the galactic center, and calculations of supernova explosions.
We will give an overview of the current status of the Crestone Project codes SAGE and RAGE. These codes are intended for general applications without tuning of algorithms or parameters. We have run a wide variety of physical applications from millimeter-scale laboratory laser experiments, to the multikilometer-scale asteroid impacts into the Pacific Ocean, to parsec-scale galaxy formation. Examples of these simulations will be shown. The goal of our effort is to avoid ad hoc models and attempt to rely on first-principles physics.

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