Modeling multidimensional effects in the propagation of radiative shocks

Details Modeling multidimensional effects in the propagation of radiative shocks Modeling multidimensional effects in the propagation of radiative shocks

2006-10-30

arxiv.org/abs/astro-ph/0610876v2

Physics of Plasmas, vol. 13, p. 113301 (2006)

Astronomy and Astrophysics

Astrophysics

Reference of the published article added

Scientific paper

10.1063/1.2366544

Radiative shocks (also called supercritical shocks) are high Mach number shock waves that photoionize the medium ahead of the shock front and give rise to a radiative precursor. They are generated in the laboratory using high-energy or high-power lasers and are frequently present in a wide range of astronomical objects. Their modelisation in one dimension has been the subject of numerous studies, but generalization to three dimensions is not straightforward. We calculate analyticaly the absorption of radiation in a grey uniform cylinder and show how it decreases with chi R, the product of the opacity chi and of the cylinder radius R. Simple formulas, whose validity range increases when chi R diminishes, are derived for the radiation field on the axis of symmetry. Numerical calculations in three dimensions of the radiative energy density, flux and pressure created by a stationary shock wave show how the radiation decreases whith R. Finally, the bidimensional structures of both the precursor and the radiation field are calculated with time-dependent radiation hydrodynamics numerical simulations and the influence of two-dimensional effects on the electron density, the temperature, the shock velocity and the shock geometry are exhibited. These simulations show how the radiative precursor shortens, cools and slows down when R is decreased.

Affiliated with

Also associated with

No associations

Rating

Modeling multidimensional effects in the propagation of radiative shocks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modeling multidimensional effects in the propagation of radiative shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling multidimensional effects in the propagation of radiative shocks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-229825