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Code of Conduct

NERSC Initiative for Scientific Exploration (NISE) 2010 Awards

Models for the Explosion of Type Ia Supernovae

Stan Woosley, University of California, Santa Cruz

Associated NERSC Project: Computational Astrophysics Consortium (m106), Principal Investigator: Stan Woosley

NISE Award: 2,500,000 Hours
Award Date: April 2010

Using the 3D AMR code CASTRO, we will model the deflagration phase of Type Ia supernovae. For 40 years this has been a forefront problem in computational astrophysics, but only recently have the codes and machines reached the point where a first principle's simulation can be attempted. Starting from a carbon-oxygen white dwarf that has reached a critical mass and ignited a thermonuclear runaway in its core, we will follow the carbon fusion flame as it propagates through the star and erupts from its surface. Quite different results have been obtained by the two groups who have so far attempted this problem in 3D (Chicago FLASH and Munich MPA). We hope to resolve the discrepancy and determine which happens more frequently in nature. Ignition conditions will be taken from other studies by our group at ORNL using the MAESTRO code that can follow the initial, highly subsonic stages of the runaway. Resolution should be sufficient to at least approximately resolve the integral scale of the highly turbulent burning (10 km).

Table of Contents

  1. Overview
  2. Modeling the Energy Flow in the Ozone Recombination Reaction
  3. Bridging the Gaps Between Fluid and Kinetic Magnetic Reconnection Simulations in Large Systems
  4. Decadal Predictability in CCSM4
  5. 3-D Radiation/Hydrodynamic Modeling on Parallel Architectures
  6. Dependence of Secondary Islands in Magnetic Reconnection on Dissipation Model
  7. Simulation of elastic properties and deformation behavior of light-weight protection materials under high pressure
  8. Molecular Mechanisms of the Enzymatic Decomposition of Cellulose Microfibrils
  9. Developing an Ocean-Atmosphere Reanalysis for Climate Applications (OARCA) for the period 1850 to present
  10. Surface Input Reanalysis for Climate Applications 1850 - 2011
  11. Pushing the limits of the GW/BSE method for excited-state properties of molecules and nanostructures
  12. Reaction pathways in methanol steam reformation
  13. Warm Dense Matter simulations using the ALE-AMR code
  14. Modeling the dynamics of catalysts with the adaptive kinetic Monte Carlo method
  15. First-Principles Study of the Role of Native Defects in the Kinetics of Hydrogen Storage Materials
  16. ITER rapid shut-down simulation
  17. First-principles Modeling of Charged-Defect-Assisted Loss Mechanisms in Nitride Light Emitters
  18. Thermodynamic, Transport, and Structural Analysis of Geosilicates Using the SIESTA First Principles Molecular Dynamics Software
  19. Computational Prediction of Protein-Protein Interactions
  20. Light propagation in nanophotonics structures designed for high-brightness photocathodes
  21. ILC Damping Ring beam instabilities
  22. Thermonuclear Explosions from White Dwarf Mergers
  23. Beam Delivery System Optimization of Next Generation X-Ray Light Sources
  24. Electron Transport in Presence of Lattice Vibrations for Electronic, Spintronic and Photovoltaic Devices
  25. High Resolution Climate Simulations with CCSM
  26. Abrupt Climate Change and the Atlantic Meridional Overturning Circulation
  27. Modeling plasma surface interactions for materials under extreme environments
  28. Models for the Explosion of Type Ia Supernovae
Last edited: 2011-06-02 14:48:56
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