Short characteristic solution of the non-LTE line transfer problem by operator perturbation. II - The two-dimensional planar slab

Details Short characteristic solution of the non-LTE line transfer problem by operator perturbation. II - The two-dimensional planar slab Short characteristic solution of the non-LTE line transfer problem by operator perturbation. II - The two-dimensional planar slab

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jqsrt..39....1k&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073), vol. 39, Jan. 1988, p. 1-12.

Statistics

Computation

15

Computational Grids, Coordinate Transformations, Perturbation Theory, Thermodynamic Equilibrium, Convergence, Iterative Solution, Relaxation Method (Mathematics), Spatial Resolution

Scientific paper

The performance of the method of Kunasz and Auer (1988) in the treatment of the non-LTE transfer problem is investigated for a sample of physical models, and comparisons with the direct implicit solutions of Mihalis et al. (1978) are presented. Although the effect of two-dimensionality on performance is found to be minimal, the advantages in accuracy of quadratic over linear interpolation on spatial resolution are found to be significant. The practicality of using approximate operators with nearest-neighbor coupling is compared for the cases of one-dimensional and two-dimensional slabs.

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