Numerical Simulations of Astrophysical Plasmas: Status and Perspectives of the Saclay/DAPNIA Software Project

Details Numerical Simulations of Astrophysical Plasmas: Status and Perspectives of the Saclay/DAPNIA Software Project Numerical Simulations of Astrophysical Plasmas: Status and Perspectives of the Saclay/DAPNIA Software Project

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..359....9a&link_type=abstract

Numerical Modeling of Space Plasma Flows: Astronum-2006 ASP Conference Series, Volume 359, Proceedings of the Conference Held 26

Mathematics

Logic

3

Scientific paper

An extensive program of numerical simulations of astrophysical plasmas is described in terms of its scientific objectives and technical software foundations. This program covers a large spectrum of challenging problems in astrophysics at various scales, ranging up from cosmological structures formation, down to dynamics of interstellar gas, star evolution and planetary formation. Fundamental physical processes, hydrodynamics, radiative transfer, gravitation, transport, turbulence, diffusion, are implemented in the framework of parallelized codes such as RAMSES and HERACLES running on high-performance, massively parallel mainframes. The developments of these algorithms are now addressed in the context of a software project aiming at the optimization of their various components and the mutualization of their resources. This includes data handling, with the migration to the HDF5 hierarchical file format, developments of new algorithms, with the prospect of using the multi-grid approach to obtain higher resolution, visualization and database organization for exploiting the scientific results. Visualization aspects are emphasized, with the implementation of a graphical interface based on IDL's object programming interface. This application is optimized to provide three-dimensional representations of large data sets.

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