An Analysis of Discretization for Solutions of the Diffusion Equation Using Mesh Centered Finite Differences (I) XYZ Geometry.
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- FLETCHER John. Keith
- O-arai Engineering Center, Power Reactor and Nuclear Fuel Development Corporation
Bibliographic Information
- Other Title
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- An Analysis of Discretization for Solutions of the Diffusion Equation Using Mesh Centered Finite Differences(1)XYZ Geometry
- Analysis of Discretization for Solution
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Abstract
In this paper eigenvalue mesh dependence is investigated for mesh centered finite difference approximations to the diffusion equation. The well known mesh squared variation of eigenvalue is quantified for XYZ geometry. The second part of the paper describes a method of significantly reducing mesh errors in diffusion theory finite difference codes. Essentially approximations to higher derivatives involving flux values at mesh points are used to generate a source which eliminates second order errors. The approach has been implemented in XYZ geometry and after a description of the technique results are presented for a series of test problems showing that almost zero mesh values can be obtained with the correction process.
Journal
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- Journal of Nuclear Science and Technology
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Journal of Nuclear Science and Technology 35 (11), 759-767, 1998
Atomic Energy Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204094641920
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- NII Article ID
- 10002080278
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- NII Book ID
- AA00703720
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- COI
- 1:CAS:528:DyaK1MXksVaqsA%3D%3D
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- ISSN
- 18811248
- 00223131
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- NDL BIB ID
- 4607761
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed