Combined space--time synthesis with axially discontinuous trial functions (LWBR Development Program)
Technical Report
·
OSTI ID:6725393
A synthesis approximation model is developed for the solution of detailed three-dimensional space-time group diffusion problems. The proposed method uses two-dimensional spatial trial functions that exhibit a step-wise discontinuous behavior in the axial dimension. This feature permits switching of trial functions at specified axial locations. An explicit treatment of movable fuel regions is incorporated into the model. The synthesis equations are derived and a detailed description of the calculation of the necessary integrals and matrix elements is presented. Static numerical examples are presented which illustrate the selection of trial functions and the potential accuracy of the combined space-time synthesis model. 14 references. (NSA 22: 16325)
- Research Organization:
- Bettis Atomic Power Lab., Pittsburgh, PA (USA)
- DOE Contract Number:
- AT(11-1)-GEN-14
- OSTI ID:
- 6725393
- Report Number(s):
- WAPD-TM-736
- 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
654003* -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BREEDER REACTORS
LWBR TYPE REACTORS
NEUTRAL-PARTICLE TRANSPORT
NEUTRON DIFFUSION EQUATION
NEUTRON TRANSPORT
NEUTRON TRANSPORT THEORY
RADIATION TRANSPORT
REACTOR LATTICES
REACTORS
THERMAL REACTORS
THREE-DIMENSIONAL CALCULATIONS
TRANSPORT THEORY
WATER COOLED REACTORS
WATER MODERATED REACTORS
220100 -- Nuclear Reactor Technology-- Theory & Calculation
654003* -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BREEDER REACTORS
LWBR TYPE REACTORS
NEUTRAL-PARTICLE TRANSPORT
NEUTRON DIFFUSION EQUATION
NEUTRON TRANSPORT
NEUTRON TRANSPORT THEORY
RADIATION TRANSPORT
REACTOR LATTICES
REACTORS
THERMAL REACTORS
THREE-DIMENSIONAL CALCULATIONS
TRANSPORT THEORY
WATER COOLED REACTORS
WATER MODERATED REACTORS