Nodal method for three-dimensional fast-reactor calculations in hexagonal geometry. [LMFBR]
A nodal method is developed for the solution of the multigroup neutron-diffusion equation in three-dimensional hexagonal-z geometry. The method employs an extension to hexagonal geometry of the transverse-integration procedure used extensively in the development of nodal schemes in Cartesian geometry. The partially-integrated fluxes in the three hex-plane directions are approximated by a polynomial tailored to the unique properties of the transverse-integrated equations in hexagonal geometry. The final equations, which are cast in the form of local inhomogeneous response matrix equations for each energy group, involve spatial moments of the node-interior flux distribution plus surface-averaged partial currents across the faces of the node.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6403642
- Report Number(s):
- CONF-830304-16; ON: DE83008875
- Resource Relation:
- Conference: American Nuclear Society topical conference on computational methods, Salt Lake City, UT, USA, 28 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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