Analytic Function Expansion Nodal Method for Hexagonal Geometry Corrected by Discontinuity Factors

NI Dong-yang; XIAN Chun-yu

Volume 31 Issue 2

Apr. 2010

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NI Dong-yang, XIAN Chun-yu. Analytic Function Expansion Nodal Method for Hexagonal Geometry Corrected by Discontinuity Factors[J]. Nuclear Power Engineering, 2010, 31(2): 1-5.

Citation:

NI Dong-yang, XIAN Chun-yu. Analytic Function Expansion Nodal Method for Hexagonal Geometry Corrected by Discontinuity Factors[J]. Nuclear Power Engineering, 2010, 31(2): 1-5.

NI Dong-yang, XIAN Chun-yu. Analytic Function Expansion Nodal Method for Hexagonal Geometry Corrected by Discontinuity Factors[J]. Nuclear Power Engineering, 2010, 31(2): 1-5.

Citation:

NI Dong-yang, XIAN Chun-yu. Analytic Function Expansion Nodal Method for Hexagonal Geometry Corrected by Discontinuity Factors[J]. Nuclear Power Engineering, 2010, 31(2): 1-5.

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Analytic Function Expansion Nodal Method for Hexagonal Geometry Corrected by Discontinuity Factors

National Key Laboratory of Reactor System Design Technology, Nuclear Power Institute of China, Chengdu, 710049, China

Received Date: 2009-03-25
Rev Recd Date: 2009-04-21

Available Online: 2025-07-29

Publish Date: 2010-04-01

Abstract

Abstract

Analytic function expansion nodal method for hexagonal geometry is improved,by introducing the discontinuity factors based on the analytic function expansion nodal method,and the programs FEMHEX-DF and FEMHEX-DFH have been developed.This paper has calculated two benchmark problems with UO₂ and MOX fuel assemblies by these programs,and the numerical results confirm that the improved method can increase the computational accuracy of the core power distributions and keff effectively,especially to the heterogeneous core.
- Discontinuity factors,
- Hexagonal geometry,
- Analytic function expansion nodal method,
- Analytic basis function,
- Neutron diffusion equation