Statistics – Computation
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apjs...80..819s&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 80, no. 2, June 1992, p. 819-845. Research supported by Universit
Statistics
Computation
148
Computational Astrophysics, Cosmic Plasma, Hydrodynamic Equations, Magnetohydrodynamic Flow, Radiative Transfer, Two Dimensional Models, Algorithms, Computational Grids, Finite Difference Theory, Plasma Radiation
Scientific paper
The radiation hydrodynamical (RHD) algorithms in ZEUS-2D are described. These algorithms use a tensor variable Eddington factor, computed from a solution of the static transfer equation, to close the system of radiation moment equations. This full transport algorithm, which differs significantly from more commonly used methods based on the diffusion approximation, is applicable in both optically thin and thick media. Results computed by these algorithms on a new collection of RHD test problems are presented. For the transfer equation, very detailed tests are possible which compare the numerical solution for the specific intensity at every point on a given tangent plane to the known analytic solution. It is shown that, while the interpolation inherent in the method of short characteristics makes the solution diffusive, it is not overly so. For certain restricted geometries and physical conditions, these methods reproduce the expected results either identically or qualitatively.
Mihalas Dimitri
Norman Michael L.
Stone James M.
No associations
LandOfFree
ZEUS-2D: A radiation magnetohydrodynamics code for astrophysical flows in two space dimensions. III - The radiation hydrodynamic algorithms and tests 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 ZEUS-2D: A radiation magnetohydrodynamics code for astrophysical flows in two space dimensions. III - The radiation hydrodynamic algorithms and tests, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ZEUS-2D: A radiation magnetohydrodynamics code for astrophysical flows in two space dimensions. III - The radiation hydrodynamic algorithms and tests will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1200652