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THE SPACE-TIME NEUTRON KINETIC EQUATIONS OBTAINED BY THE SEMIDIRECT VARIATIONAL METHOD

Journal Article · · Nuclear Sci. and Eng.
OSTI ID:4810179
Using a semidirect variational method, the timedependent coefficients of a modal expansion of the neutron fluxes are given by the Euler-Lagrange equations obtained from a variational principle for the multigroup kinetic equations. In order to avoid the difficult task of determining orthogonal eigenfunctions for a modal expansion in a complex geometry, an approximate solution of the kinetic equations by the method of the Green's function results in a set of readily calculated space modes. These modes can also be adapted to perturbations in the diffusion parameters about which a priori information is available. (auth)
Research Organization:
Knolls Atomic Power Lab., Schenectady, N.Y.
NSA Number:
NSA-16-022975
OSTI ID:
4810179
Journal Information:
Nuclear Sci. and Eng., Journal Name: Nuclear Sci. and Eng. Vol. Vol: 13
Country of Publication:
United States
Language:
English