A nodal expansion method for the neutron diffusion equation in cylindrical geometry
Conference
·
OSTI ID:459263
- Institute of Physics and Power Engineering, Obninsk (Russian Federation)
A polynomial nodal expansion method (NEM) is applied to solve multigroup diffusion equations in cylindrical R-Z geometry, Fourth-order polynomials are used to approximate one dimensional (1D) transverse integrated fluxes. The special set of the basis functions is used in R-direction. The transverse integrated leakages are approximated by both constant and quadratic polynomials. Preliminary efficiency evaluation of the NEM is carried out for a fast breeder reactor (FBR) model problem. Results indicate computational efficiency of NEM in comparison with finite-difference method (FDM).
- OSTI ID:
- 459263
- Report Number(s):
- CONF-950420--
- Country of Publication:
- United States
- Language:
- English
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