The analytic nodal diffusion solver ANDES in multigroups for 3D rectangular geometry: Development and performance analysis

Lozano Montero, Juan Andrés; García Herranz, Nuria; Ahnert Iglesias, Carolina y Aragonés Beltrán, José María (2008). The analytic nodal diffusion solver ANDES in multigroups for 3D rectangular geometry: Development and performance analysis. "Annals of Nuclear Energy", v. 35 (n. 12); pp. 2365-2374. ISSN 0306-4549. https://doi.org/10.1016/j.anucene.2008.07.013.

Descripción

Título: The analytic nodal diffusion solver ANDES in multigroups for 3D rectangular geometry: Development and performance analysis
Autor/es:
  • Lozano Montero, Juan Andrés
  • García Herranz, Nuria
  • Ahnert Iglesias, Carolina
  • Aragonés Beltrán, José María
Tipo de Documento: Artículo
Título de Revista/Publicación: Annals of Nuclear Energy
Fecha: Diciembre 2008
Volumen: 35
Materias:
Palabras Clave Informales: Analytic coarse-mesh finite-difference, ACMFD, ANDES, 3D rectangular geometry
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Nuclear [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

In this work we address the development and implementation of the analytic coarse-mesh finite-difference (ACMFD) method in a nodal neutron diffusion solver called ANDES. The first version of the solver is implemented in any number of neutron energy groups, and in 3D Cartesian geometries; thus it mainly addresses PWR and BWR core simulations. The details about the generalization to multigroups and 3D, as well as the implementation of the method are given. The transverse integration procedure is the scheme chosen to extend the ACMFD formulation to multidimensional problems. The role of the transverse leakage treatment in the accuracy of the nodal solutions is analyzed in detail: the involved assumptions, the limitations of the method in terms of nodal width, the alternative approaches to implement the transverse leakage terms in nodal methods – implicit or explicit _, and the error assessment due to transverse integration. A new approach for solving the control rod ‘‘cusping” problem, based on the direct application of the ACMFD method, is also developed and implemented in ANDES. The solver architecture turns ANDES into an user-friendly, modular and easily linkable tool, as required to be integrated into common software platforms for multi-scale and multi-physics simulations. ANDES can be used either as a stand-alone nodal code or as a solver to accelerate the convergence of whole core pin-by-pin code systems. The verification and performance of the solver are demonstrated using both proof-of-principle test cases and well-referenced international benchmarks.

Más información

ID de Registro: 2298
Identificador DC: http://oa.upm.es/2298/
Identificador OAI: oai:oa.upm.es:2298
Identificador DOI: 10.1016/j.anucene.2008.07.013
URL Oficial: http://www.elsevier.com/wps/find/journaldescription.cws_home/217/description#description
Depositado por: Memoria Investigacion
Depositado el: 20 May 2010 09:47
Ultima Modificación: 20 Abr 2016 12:02
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