Energy dependent finite element method for two-dimensional diffusion problems
- Author
- Komoriya, H.
- Published
- United States : [publisher not identified], 1977.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1977. - Physical Description
- microfiche : negative ; 11 x 15 cm
- Additional Creators
- Walters, W. F.
- Summary
- The effectiveness of the energy dependent finite element method (EDFEM) as applied to two-dimensional multigroup diffusion problems is investigated. The EDFEM couples the finite element method (FEM) formalism with the energy dependent element size scheme. The EDFEM allows the elements to straddle material interfaces if certain conditions are satisfied; this makes this method especially suitable for heterogeneous reactor calculations. Comparisons of the results obtained by the EDFEM, the FEM, and the finite difference method for a ZION-I PWR model are presented. A significant reduction of the total number of unknowns involved in the problem is accomplished using the EDFEM which yields a reduction of the computing time by 30 percent.
- Report Numbers
- LA-UR-77-59; CONF-770304-4
- Other Subject(s)
- Collection
- U.S. Atomic Energy Commission depository collection.
- Note
- DOE contract number: W-7405-ENG-36
OSTI Identifier 7316375
Research organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States).
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