SNEX: semianalytic solution of the one-dimensional discrete ordinates (S/sub n/) transport equations with diamond differenced angular fluxes
SNEX is a code which exactly solves the spatial single group, one-dimensional (plane, cylinder, sphere) discrete ordinates transport equations with diamond approximation for the angular fluxes. Its purposes are to provide a standard for comparisons of spatial differencing schemes as well as an exact numerical solution to the discrete ordinates equations in one-dimensional geometries. Full solutions are generated by numerically integrating the inhomogeneous source terms and adding them to the homogeneous (analytic) solutions in the standard fashion. Simple relationships between angular quadratures permit application of the method to plane, cylindrical and spherical geometries. Analysis is confined to isotropic scattering. Simple theory and methodology are presented and discussed. A code listing and sample problems are also included.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6022790
- Report Number(s):
- LA-7879-MS
- Country of Publication:
- United States
- Language:
- English
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