par Noel, Claire 
;Busegnies, Yves ;Papalexandris, Miltidis V.;Goriely, Stéphane
Référence Computer physics communications, 179, 1-3, page (190-193)
Publication Publié, 2008-07
;Busegnies, Yves ;Papalexandris, Miltidis V.;Goriely, Stéphane Référence Computer physics communications, 179, 1-3, page (190-193)
Publication Publié, 2008-07
Article révisé par les pairs
| Résumé : | A new hydrodynamical algorithm to study astrophysical detonations is presented. A prime motivation of this development is the description of a carbon detonation in conditions relevant to superbursts, which are thought to result from the propagation of a detonation front around the surface of a neutron star in the carbon layer underlying the atmosphere. The algorithm we have developed is a finite-volume method inspired by the original MUSCL scheme of van Leer (1979). The one-dimensional calculations we have performed demonstrate that the carbon detonation at the surface of a neutron star is a multiscale phenomenon. The length scale of liberation of energy is 106 times smaller than the total reaction length. We show that a multi-resolution approach can be used to solve all the reaction lengths. For mixed H/He accreting systems, we have introduced a new reduced network to study the impact of the photodisintegration of the heavy elements on the detonation. © 2008 Elsevier B.V. All rights reserved. |
