12 papers · 1 filter
Turbulence-Flame Interactions in Type Ia Supernovae
A. J. Aspden, J. B. Bell, M. S. Day +2
The large range of time and length scales involved in type Ia supernovae (SN Ia) requires the use of flame models. As a prelude to exploring various options for flame models, we co…
Propagation of the First Flames in Type Ia Supernovae
M. Zingale, L. J. Dursi
We consider the competition of the different physical processes that can affect the evolution of a flame bubble in a Type Ia supernovae -- burning, turbulence and buoyancy. Even in…
New Approaches for Modeling Type Ia Supernovae
M. Zingale, A. S. Almgren, J. B. Bell +3
Type Ia supernovae (SNe Ia) are the largest thermonuclear explosions in the Universe. Their light output can be seen across great distances and has led to the discovery that the ex…
The Physics of Flames in Type Ia Supernovae
M. Zingale, S. E. Woosley, J. B. Bell +2
We extend a low Mach number hydrodynamics method developed for terrestrial combustion, to the study of thermonuclear flames in Type Ia supernovae. We discuss the differences betwee…
Three-dimensional Numerical Simulations of Rayleigh-Taylor Unstable Flames in Type Ia Supernovae
M. Zingale, S. E. Woosley, C. A. Rendleman +2
Flame instabilities play a dominant role in accelerating the burning front to a large fraction of the speed of sound in a Type Ia supernova. We present a three-dimensional numerica…
Direct Numerical Simulations of Type Ia Supernovae Flames II: The Rayleigh-Taylor Instability
J. B. Bell, M. S. Day, C. A. Rendleman +2
A Type Ia supernova explosion likely begins as a nuclear runaway near the center of a carbon-oxygen white dwarf. The outward propagating flame is unstable to the Landau-Darrieus, R…