Polynomial expansion nodal method for hexagonal core analaysis
- Seoul National Univ. (Korea, Democratic People`s Republic of)
Recently, the analytic function expansion nodal (AFEN) method has been proposed as a new nodal scheme for hexagonal core neutronics analyses. The AFEN method has several advantages. It is very accurate while being free from singularity problems, and the pin power reconstruction is easily implemented. In our independent study, however, we observed that it has the weakness of slow computational speed in comparison with other coarse-mesh methods. It is believed that the use of analytic functions like sinusoidal or hyperbolic functions for representing the local variation of group flux in each computational node may be partly responsible for the weakness. In this paper we examine the use of the polynomial expansion nodal (PEN) method, which utilizes polynomials instead of analytic functions in the AFEN method, to overcome this weakness.
- OSTI ID:
- 411634
- Report Number(s):
- CONF-951006--
- Journal Information:
- Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 73; ISSN 0003-018X; ISSN TANSAO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Unified Nodal Method Formulation for Analytic Function Expansion Nodal Method Solution to Two-Group Diffusion Equations in Rectangular Geometry
Critical node treatment in the analytic function expansion method for Pin Power Reconstruction