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Title: A review of direct numerical simulations of astrophysical detonations and their implications

Abstract

Multi-dimensional direct numerical simulations (DNS) of astrophysical detonations in degenerate matter have revealed that the nuclear burning is typically characterized by cellular structure caused by transverse instabilities in the detonation front. Type Ia supernova modelers often use one- dimensional DNS of detonations as inputs or constraints for their whole star simulations. While these one-dimensional studies are useful tools, the true nature of the detonation is multi-dimensional. The multi-dimensional structure of the burning influences the speed, stability, and the composition of the detonation and its burning products, and therefore, could have an impact on the spectra of Type Ia supernovae. Considerable effort has been expended modeling Type Ia supernovae at densities above 1x10 7 g∙cm -3 where the complexities of turbulent burning dominate the flame propagation. However, most full star models turn the nuclear burning schemes off when the density falls below 1x10 7 g∙cm -3 and distributed burning begins. The deflagration to detonation transition (DDT) is believed to occur at just these densities and consequently they are the densities important for studying the properties of the subsequent detonation. In conclusion, this work reviews the status of DNS studies of detonations and their possible implications for Type Ia supernova models. Itmore » will cover the development of Detonation theory from the first simple Chapman-Jouguet (CJ) detonation models to the current models based on the time-dependent, compressible, reactive flow Euler equations of fluid dynamics.« less

Authors:
 [1];  [2];  [2];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). National Center for Computational Sciences
  2. Univ. of Tennessee, Knoxville, TN (United States). Department of Physics and Astronomy
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). National Center for Computational Sciences; Univ. of Tennessee, Knoxville, TN (United States). Department of Physics and Astronomy
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
OSTI Identifier:
1159400
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Frontiers of Physics
Additional Journal Information:
Journal Volume: 8; Journal Issue: 2; Journal ID: ISSN 2095-0462
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; supernova; detonations; direct numerical simulations

Citation Formats

Parete-Koon, Suzanne T., Smith, Christopher R., Papatheodore, Thomas L., and Bronson Messer, O. E. A review of direct numerical simulations of astrophysical detonations and their implications. United States: N. p., 2013. Web. doi:10.1007/s11467-013-0279-y.
Parete-Koon, Suzanne T., Smith, Christopher R., Papatheodore, Thomas L., & Bronson Messer, O. E. A review of direct numerical simulations of astrophysical detonations and their implications. United States. doi:10.1007/s11467-013-0279-y.
Parete-Koon, Suzanne T., Smith, Christopher R., Papatheodore, Thomas L., and Bronson Messer, O. E. Thu . "A review of direct numerical simulations of astrophysical detonations and their implications". United States. doi:10.1007/s11467-013-0279-y. https://www.osti.gov/servlets/purl/1159400.
@article{osti_1159400,
title = {A review of direct numerical simulations of astrophysical detonations and their implications},
author = {Parete-Koon, Suzanne T. and Smith, Christopher R. and Papatheodore, Thomas L. and Bronson Messer, O. E.},
abstractNote = {Multi-dimensional direct numerical simulations (DNS) of astrophysical detonations in degenerate matter have revealed that the nuclear burning is typically characterized by cellular structure caused by transverse instabilities in the detonation front. Type Ia supernova modelers often use one- dimensional DNS of detonations as inputs or constraints for their whole star simulations. While these one-dimensional studies are useful tools, the true nature of the detonation is multi-dimensional. The multi-dimensional structure of the burning influences the speed, stability, and the composition of the detonation and its burning products, and therefore, could have an impact on the spectra of Type Ia supernovae. Considerable effort has been expended modeling Type Ia supernovae at densities above 1x107 g∙cm-3 where the complexities of turbulent burning dominate the flame propagation. However, most full star models turn the nuclear burning schemes off when the density falls below 1x107 g∙cm-3 and distributed burning begins. The deflagration to detonation transition (DDT) is believed to occur at just these densities and consequently they are the densities important for studying the properties of the subsequent detonation. In conclusion, this work reviews the status of DNS studies of detonations and their possible implications for Type Ia supernova models. It will cover the development of Detonation theory from the first simple Chapman-Jouguet (CJ) detonation models to the current models based on the time-dependent, compressible, reactive flow Euler equations of fluid dynamics.},
doi = {10.1007/s11467-013-0279-y},
journal = {Frontiers of Physics},
number = 2,
volume = 8,
place = {United States},
year = {2013},
month = {4}
}

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Figures / Tables:

FIG. 1. FIG. 1.: Plot of the Hugoniot Curve and Rayleigh Line showing a stable detonation.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.