Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5430157 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2009 | 7 Pages |
Abstract
Multi-group method, a generally accepted procedure for handling the radiative transfer equation, is accompanied by the group averaged absorption coefficient, and actually the coefficient is angularly anisotropic. In the paper, we present a brief discussion how the anisotropy of the coefficient makes the material absorb photons at different rate in each direction, also study its effect on the diffusion approach by comparing the results calculated using multi-group diffusion and multi-group discrete ordinate SN for the isotropic and anisotropic group averaged absorption coefficients respectively, and find that the anisotropy deteriorates the behavior of diffusion approach.
Related Topics
Physical Sciences and Engineering
Chemistry
Spectroscopy
Authors
Jiwei Li, Jinghong Li,