An improved Fokker-Planck angular differencing scheme
Journal Article
·
· Nucl. Sci. Eng.; (United States)
OSTI ID:5934553
An analysis is performed that shows that the standard three-point difference scheme for the Fokker-Planck angular diffusion operator rigorusly preserves the zeroth angular moment, but not the first moment. As a result, the scheme does not give the exact diffusion solution in the diffusion limit. This deficiency is eliminated by means of a simple modification of the scheme. The three-point structure and positivity of the original scheme are retained in the modified scheme.
- Research Organization:
- Los Alamos National Laboratory, Applied Theoretical Physics Division, Los Alamos, NM
- OSTI ID:
- 5934553
- Journal Information:
- Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 89:2; ISSN NSENA
- Country of Publication:
- United States
- Language:
- English
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