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Zheleva, Nonka and Ivanov, Plamen and Todorova, Galina and Kolev, Nikola and Herrero Carrascosa, José Javier (2013). Benchmarking of calculation schemes in Apollo2 and COBAYA3 for VVER lattices. In: "International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2013)", 05/05/2013 - 09/05/2013, San Valley, EEUU. ISBN 978-0-89448-700-2. pp. 1-14.
Title: | Benchmarking of calculation schemes in Apollo2 and COBAYA3 for VVER lattices |
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Author/s: |
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Item Type: | Presentation at Congress or Conference (Article) |
Event Title: | International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2013) |
Event Dates: | 05/05/2013 - 09/05/2013 |
Event Location: | San Valley, EEUU |
Title of Book: | International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2013) |
Date: | 2013 |
ISBN: | 978-0-89448-700-2 |
Subjects: | |
Freetext Keywords: | APOLLO2, MOC, COBAYA3 pin-by-pin, VVER-1000, lattice benchmarks |
Faculty: | E.T.S.I. Industriales (UPM) |
Department: | Ingeniería Nuclear [hasta 2014] |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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This paper presents solutions of the NURISP VVER lattice benchmark using APOLLO2, TRIPOLI4 and COBAYA3 pin-by-pin. The main objective is to validate MOC based calculation schemes for pin-by-pin cross-section generation with APOLLO2 against TRIPOLI4 reference results. A specific objective is to test the APOLLO2 generated cross-sections and interface discontinuity factors in COBAYA3 pin-by-pin calculations with unstructured mesh. The VVER-1000 core consists of large hexagonal assemblies with 2mm inter-assembly water gaps which require the use of unstructured meshes in the pin-by-pin core simulators. The considered 2D benchmark problems include 19-pin clusters, fuel assemblies and 7-assembly clusters. APOLLO2 calculation schemes with the step characteristic method (MOC) and the higher-order Linear Surface MOC have been tested. The comparison of APOLLO2 vs.TRIPOLI4 results shows a very close agreement. The 3D lattice solver in COBAYA3 uses transport corrected multi-group diffusion approximation with interface discontinuity factors of GET or Black Box Homogenization type. The COBAYA3 pin-by-pin results in 2, 4 and 8 energy groups are close to the reference solutions when using side-dependent interface discontinuity factors.
Item ID: | 25989 |
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DC Identifier: | https://oa.upm.es/25989/ |
OAI Identifier: | oai:oa.upm.es:25989 |
Official URL: | http://www.mc2013.org/ |
Deposited by: | Memoria Investigacion |
Deposited on: | 14 May 2014 12:36 |
Last Modified: | 22 Sep 2014 11:39 |