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A fully threaded tree (FTT) for adaptive refinement of regular meshes is described. By using a tree threaded at all levels, tree traversals for finding nearest neighbors are avoided. All operationsâ€¦ (More)

- Wendell Anderson, Preston Briggs, +4 authors Robert Rosenberg
- ACM/IEEE SC 2003 Conference (SC'03)
- 2003

We describe our experiences porting and tuning three scientific programs to the Cray MTA-2, paying particular attention to the problems posed by I/O. We have measured the performance of each of theâ€¦ (More)

We study a Type Ia supernova explosion using large-scale three-dimensional numerical simulations based on reactive fluid dynamics with a simplified mechanism for nuclear reactions and energy release.â€¦ (More)

We present a general approach to the analysis of gauge stability of 3+1 formulations of General Relativity (GR). Evolution of coordinate perturbations and the corresponding perturbations of lapse andâ€¦ (More)

- Alexei Y. Poludnenko, Alexei M. Khokhlov
- J. Comput. Physics
- 2007

We present the method for computation of fluid flows that are characterized by the large degree of expansion/contraction and in which the fluid velocity is dominated by the bulk component associatedâ€¦ (More)

The paper describes a physical model and numerical algorithm for modeling Type Ia supernova (SNIa) explosions in three-dimensions and presents first results of modeling a deflagration explosion in aâ€¦ (More)

- Robert A. Fesen, Peter A. HÃ¶flich, +4 authors J. Craig Wheeler
- 2007

SN 1885 was a probable subluminous SN Ia that occurred in the bulge of the Andromeda galaxy, M31, at a projected location 1600 from the nucleus. Here we present and analyze Hubble Space Telescopeâ€¦ (More)

Thermonuclear explosions of Type Ia supernovae (SNIa) involve turbulent deflagrations, detonations, and possibly a deflagration-to-detonation transition. A phenomenological delayed detonation modelâ€¦ (More)

This paper outlines a theoretical approach for predicting the onset of detonation in unconfined turbulent flames. Two basic assumuptions are made: 1) the gradient mechanism is the inherent mechanismâ€¦ (More)

We study a scalar hyperbolic partial differential equation with non-linear terms similar to those of the equations of general relativity. The equation has a number of non-trivial analytical solutionsâ€¦ (More)