Adaptive grid radiation hydrodynamics with TITAN

Gehmeyr, M.; Mihalas, Dimitri

doi:10.1016/0167-2789(94)90143-0

Cited by 37 publications

(26 citation statements)

References 9 publications

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“…Another method of closing the system is the variable tensor Eddington formalism (VTEF). It solves, in a first step, the moment equations with a fixed Eddington tensor and then computes the new tensor by solving the transfer equation locally with a fixed source function (Gehmeyr & Mihalas 1993;Stone et al 1992) or with an approximate time dependence (Hayes & Norman 2003). If this procedure is iterated until the value of the source converges, one has a means of solving the transfer equation exactly.…”

Section: Introductionmentioning

confidence: 99%

HERACLES: a three-dimensional radiation hydrodynamics code

González

Audit

Huynh

2007

A&A

225

274

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Aims. We present a new three-dimensional radiation hydrodynamics code called HERACLES that uses an original moment method to solve the radiative transfer. Methods. 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.Results. 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.Conclusions. 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, and protoplanetary discs.

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Section: Introductionmentioning

confidence: 99%

HERACLES: a three-dimensional radiation hydrodynamics code

González

Audit

Huynh

2007

A&A

225

274

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“…The flux F z can become slightly negative in the shocked medium, around z = 0.02 mm. This was already predicted in onedimensional simulations of radiative shocks (Ensman 1994;Gehmeyr & Mihalas 1994;Sincell et al 1999;Sekora & Stone 2010). The three-dimensional nature of the radiative shock is revealed by Figure 3, which represents the distribution of the flux F z and the temperature T over the cross section (x, y) at a given position z in the tube.…”

Section: D Structure and Radiative Properties Of A Radiative Shockmentioning

confidence: 80%

3D modeling of accretion shocks in young stellar objects : Simulation of laboratory experiments

Ibgui

González

Stehl*error*é

et al. 2012

EAS Publications Series

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“…For example, ion conduction is not even considered in the multi-T fluid approximations used in Ref. [9]. Thus, our analysis focuses on the errors associated with splitting the ion-electron coupling terms and linearizing the transport and electron equations.…”

Section: Modified Equation Analysismentioning

confidence: 99%