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Issue Date: 1-Aug-2010
Title: Three dimensional heterogeneous finite element method for static multi‐group neutron diffusion
Authors: Aydogdu, Elif Can
Publisher : University of Ontario Institute of Technology
Degree : Master of Applied Science (MASc)
Department : Nuclear Engineering
Supervisor : Nichita, Eleodor M.
Keywords: Heterogeneous finite element method
Static neutron diffusion equation
Finite difference equations
Weighted residuals method
Abstract: Because current full‐core neutronic‐calculations use two‐group neutron diffusion and rely on homogenizing fuel assemblies, reconstructing pin powers from such a calculation is an elaborate and not very accurate process; one which becomes more difficult with increased core heterogeneity. A three‐dimensional Heterogeneous Finite Element Method (HFEM) is developed to address the limitations of current methods by offering fine‐group energy representation and fuel‐pin‐level spatial detail at modest computational cost. The calculational cost of the method is roughly equal to the calculational cost of the Finite Differences Method (FDM) using one mesh box per fuel assembly and a comparable number of energy groups. Pin‐level fluxes are directly obtained from the method’s results without the need for reconstruction schemes.
Appears in Collections:Faculty of Energy Systems and Nuclear Science - Master Theses
Electronic Theses and Dissertations (Public)

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