An S{sub 2}-like acceleration method for the nonlinear characteristic transport scheme
- Los Alamos National Lab., NM (United States)
Recently a nonlinear spatial differencing scheme for solving the discrete ordinates equations was introduced. This scheme, referred to as the nonlinear characteristic (NC) scheme, is accurate for both optically thin and optically thick spatial meshes and is strictly positive. The NC discrete ordinates equations can be solved using the source iteration method. It is well known that the source iteration method converges infinitely slowly for optically thick problems with scattering ratios at or near unity. In this summary, we describe an S{sub 2}-like acceleration scheme for accelerating the convergence of the source iteration method as applied to the NC scheme and provide results to show how effective it is.
- OSTI ID:
- 89136
- Report Number(s):
- CONF-941102--
- Journal Information:
- Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 71; ISSN 0003-018X; ISSN TANSAO
- Country of Publication:
- United States
- Language:
- English
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