Search Results - "ZINGALE, M"

An Improved Method for Coupling Hydrodynamics with Astrophysical Reaction Networks by Zingale, M., Katz, M. P., Nonaka, A., Rasmussen, M.

“…Abstract Reacting astrophysical flows can be challenging to model, because of the difficulty in accurately coupling hydrodynamics and reactions. This can be…”
Get full text

LOW MACH NUMBER MODELING OF CONVECTION IN HELIUM SHELLS ON SUB-CHANDRASEKHAR WHITE DWARFS. II. BULK PROPERTIES OF SIMPLE MODELS by Jacobs, A. M., Zingale, M., Nonaka, A., Almgren, A. S., Bell, J. B.

“…ABSTRACT The dynamics of helium shell convection driven by nuclear burning establish the conditions for runaway in the sub-Chandrasekhar-mass,…”
Get full text

Dynamics of Laterally Propagating Flames in X-Ray Bursts. II. Realistic Burning and Rotation by Harpole, A., Ford, N. M., Eiden, K., Zingale, M., Willcox, D. E., Cavecchi, Y., Katz, M. P.

“…Abstract We continue to investigate two-dimensional laterally propagating flames in type I X-ray bursts using fully compressible hydrodynamics simulations. In…”
Get full text

COMPARISONS OF TWO- AND THREE-DIMENSIONAL CONVECTION IN TYPE I X-RAY BURSTS by Zingale, M., Malone, C. M., Nonaka, A., Almgren, A. S., Bell, J. B.

“…ABSTRACT We perform the first detailed three-dimensional simulation of low Mach number convection preceding runaway thermonuclear ignition in a mixed H/He…”
Get full text

Improved Coupling of Hydrodynamics and Nuclear Reactions via Spectral Deferred Corrections by Zingale, M., Katz, M. P., Bell, J. B., Minion, M. L., Nonaka, A. J., Zhang, W.

“…Simulations in stellar astrophysics involve the coupling of hydrodynamics and nuclear reactions under a wide variety of conditions, from simmering convective…”
Get full text

HIGH-RESOLUTION SIMULATIONS OF CONVECTION PRECEDING IGNITION IN TYPE Ia SUPERNOVAE USING ADAPTIVE MESH REFINEMENT by Nonaka, A, Aspden, A J, Zingale, M, Almgren, A S, Bell, J B, Woosley, S E

“…We extend our previous three-dimensional, full-star simulations of the final hours of convection preceding ignition in Type Ia supernovae to higher resolution…”
Get full text

MULTIDIMENSIONAL MODELING OF TYPE I X-RAY BURSTS. II. TWO-DIMENSIONAL CONVECTION IN A MIXED H/He ACCRETOR by Malone, C M, Zingale, M, Nonaka, A, Almgren, A S, Bell, J B

“…Type I X-ray bursts are thermonuclear explosions of accreted material on the surface of neutron stars in low-mass X-ray binaries. Prior to the ignition of a…”
Get full text

THE DEFLAGRATION STAGE OF CHANDRASEKHAR MASS MODELS FOR TYPE Ia SUPERNOVAE. I. EARLY EVOLUTION by Malone, C M, Nonaka, A, Woosley, S E, Almgren, A S, Bell, J B, Dong, S, Zingale, M

“…We present high-resolution, full-star simulations of the post-ignition phase of Type Ia supernovae using the compressible hydrodynamics code Castro. Initial…”
Get full text

LOW MACH NUMBER MODELING OF CORE CONVECTION IN MASSIVE STARS by Gilet, C, Almgren, A S, Bell, J B, Nonaka, A, Woosley, S E, Zingale, M

“…This work presents three-dimensional simulations of core convection in a 15 M sub([middot in circle]) star halfway through its main sequence lifetime. To…”
Get full text

An international field study of the ICD‐11 behavioural indicators for disorders of intellectual development by Lemay, K. R., Kogan, C. S., Rebello, T. J., Keeley, J. W., Bhargava, R., Sharan, P., Sharma, M., Kommu, J. V. S., Kishore, M. T., Jesus Mari, J., Ginige, P., Buono, S., Recupero, M., Zingale, M., Zagaria, T., Cooray, S., Roy, A., Reed, G. M.

“…Background The World Health Organization (WHO) has approved the 11th Revision of the International Classification of Diseases (ICD‐11). A version of the ICD‐11…”
Get full text

LOW MACH NUMBER MODELING OF CONVECTION IN HELIUM SHELLS ON SUB-CHANDRASEKHAR WHITE DWARFS. I. METHODOLOGY by Zingale, M, Nonaka, A, Almgren, A S, Bell, J B, Malone, C M, ORVEDAHL, R J

“…We assess the robustness of a low Mach number hydrodynamics algorithm for modeling helium shell convection on the surface of a white dwarf in the context of…”
Get full text

Propagation of the First Flames in Type Ia Supernovae by Zingale, M, Dursi, L. J

“…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…”
Get full text

Three-dimensional Numerical Simulations of Rayleigh-Taylor Unstable Flames in Type Ia Supernovae by Zingale, M, Woosley, S. E, Rendleman, C. A, Day, M. S, Bell, J. B

“…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…”
Get full text

Low Mach Number Modeling of Type Ia Supernovae. III. Reactions by Almgren, A. S, Bell, J. B, Nonaka, A, Zingale, M

“…We continue the description of a low Mach number hydrodynamics algorithm for reacting, full star flows. Here we demonstrate how to accurately incorporate…”
Get full text

CASTRO: A New Compressible Astrophysical Solver. I. Hydrodynamics and Self-gravity by Almgren, A. S, Beckner, V. E, Bell, J. B, Day, M. S, Howell, L. H, Joggerst, C. C, Lijewski, M. J, Nonaka, A, Singer, M, Zingale, M

“…Here, we present a new code, CASTRO, that solves the multicomponent compressible hydrodynamic equations for astrophysical flows including self-gravity, nuclear…”
Get full text

Low Mach Number Modeling of Type Ia Supernovae. I. Hydrodynamics by Almgren, A. S, Bell, J. B, Rendleman, C. A, Zingale, M

“…We introduce a low Mach number equation set for the large-scale numerical simulation of carbon-oxygen white dwarfs experiencing a thermonuclear deflagration…”
Get full text

Turbulence-Flame Interactions in Type Ia Supernovae by Aspden, A. J, Bell, J. B, Day, M. S, Woosley, S. E, Zingale, M

“…The large range of time and length scales involved in Type Ia supernovae (SNe Ia) requires the use of flame models. As a prelude to exploring various options…”
Get full text

Adaptive low Mach number simulations of nuclear flame microphysics by Bell, J.B, Day, M.S, Rendleman, C.A, Woosley, S.E, Zingale, M.A

“…We introduce a numerical model for the simulation of nuclear flames in Type Ia supernovae. This model is based on a low Mach number formulation that…”
Get full text

Direct Numerical Simulations of Type Ia Supernovae Flames. II. The Rayleigh-Taylor Instability by Bell, J. B, Day, M. S, Rendleman, C. A, Woosley, S. E, Zingale, M

“…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…”
Get full text

Low Mach Number Modeling of Type Ia Supernovae. II. Energy Evolution by Almgren, A. S, Bell, J. B, Rendleman, C. A, Zingale, M

“…The convective period leading up to a Type Ia supernova (SN Ia) explosion is characterized by very low Mach number flows, requiring hydrodynamic methods…”
Get full text