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Monday, February 25, 2008
10:00 AM - 11:00 AM
CNLS Conference Room (TA-3, Bldg 1690)


BETHE, an ALE Code for Astrophysical Simulations

Jeremiah Murphy
Steward Observatory, The University of Arizona

BETHE is a new code to solve self-gravitating radiation-hydrodynamics for 1D and 2D astrophysical simulations. Its hydrodynamic core is an Arbitrary Lagrangian-Eulerian (ALE) approach that uses time-dependent, arbitrary, unstructured grids. While our initial motivation in developing BETHE was for simulations of core-collapse supernovae (explosions of massive stars), I suggest that the arbitrary nature of the grid enables novel simulations, addressing many outstanding astrophysical problems, including winds from hot stars and giant eruptions of luminous blue variables. With an eye toward astrophysical simulations, I'll describe idiosyncrasies of ALE simulations, document our progress in solving some of them, and list remaining problems to be resolved.