Systematic lattice cell and fuel assembly homogenization for nodal diffusion methods
Conference
·
· Transactions of the American Nuclear Society; (United States)
OSTI ID:7089861
- Univ. of Virginia, Charlottesville (United States)
Modern nodal methods have been known for some time to be very accurate and efficient for practical reactor calculations on bundle-sized grids, their main limitation being the accuracy of the homogenized parameters used. Thus, various methods have been proposed to determine these parameters and related flux discontinuity factors. However, most procedures are ad hoc and theoretically require a knowledge of the exact transport theory solution. Hence, the authors have developed a systematic homogenization theory for use with nodal diffusion methods - that obviates this ab initio need for an exact solution - and in the final reactor diffusion calculation yields the exact transport equation eigenvalue 1/k[sub eff] to fourth order in a small parameter.
- OSTI ID:
- 7089861
- Report Number(s):
- CONF-901101--
- Conference Information:
- Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 62
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
CALCULATION METHODS
CROSS SECTIONS
EIGENFUNCTIONS
EIGENVALUES
FUEL ASSEMBLIES
FUNCTIONS
HOMOGENIZATION METHODS
MULTIPLICATION FACTORS
NEUTRON FLUX
NODAL EXPANSION METHOD
PHYSICS
RADIATION FLUX
REACTOR LATTICES
REACTOR PHYSICS
TWO-DIMENSIONAL CALCULATIONS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
CALCULATION METHODS
CROSS SECTIONS
EIGENFUNCTIONS
EIGENVALUES
FUEL ASSEMBLIES
FUNCTIONS
HOMOGENIZATION METHODS
MULTIPLICATION FACTORS
NEUTRON FLUX
NODAL EXPANSION METHOD
PHYSICS
RADIATION FLUX
REACTOR LATTICES
REACTOR PHYSICS
TWO-DIMENSIONAL CALCULATIONS