Systematic lattice cell and fuel assembly homogenization for nodal diffusion methods
- 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-; CODEN: TANSAO
- Journal Information:
- Transactions of the American Nuclear Society; (United States), Vol. 62; Conference: American Nuclear Society (ANS) winter meeting, Washington, DC (United States), 11-16 Nov 1990; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
REACTOR PHYSICS
HOMOGENIZATION METHODS
NODAL EXPANSION METHOD
CROSS SECTIONS
EIGENFUNCTIONS
EIGENVALUES
FUEL ASSEMBLIES
MULTIPLICATION FACTORS
NEUTRON FLUX
REACTOR LATTICES
TWO-DIMENSIONAL CALCULATIONS
CALCULATION METHODS
FUNCTIONS
PHYSICS
RADIATION FLUX
220100* - Nuclear Reactor Technology- Theory & Calculation