Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
HERACLES : a three-dimensional radiation hydrodynamics code
Year:2007
Research Areas
  • Astronomy,
  • Astrophysics
Information
Abstract
We present a new three-dimensional radiation hydrodynamics code called HERACLES that uses an original moment method to solve the radiative transfer. The radiation transfer is modelled using a two-moment model and a closure relation that allows large angular anisotropies in the radiation field to be preserved and reproduced. The radiative equations thus obtained are solved by a second-order Godunov-type method and integrated implicitly by using iterative solvers. HERACLES has been parallelized with the MPI library and implemented in cartesian, cylindrical, and spherical coordinates. To characterize the accuracy of HERACLES and to compare it with other codes, we performed a series of tests including purely radiative tests and radiation-hydrodynamics ones. The results show that the physical model used in HERACLES for the transfer is fairly accurate in both the diffusion and transport limit, but also for semi-transparent regions. This makes HERACLES very well-suited to studying many astrophysical problems such as radiative shocks, molecular jets of young stars, fragmentation, and formation of dense cores in the interstellar medium, protoplanetary discs.
International
Si
JCR
Si
Title
ASTRON ASTROPHYS
ISBN
0004-6361
Impact factor JCR
4,259
Impact info
Volume
464
Journal number
0
From page
429
To page
435
Month
MARZO
Ranking
Participants
  • Autor: Philippe HUYNH (CEA Saclay)
  • Autor: Matthias Gonzalez . (UPM)
  • Autor: Edouard AUDIT (CEA Saclay)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Fusión Nuclear
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)