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A finite element method for neutron noise analysis in hexagonal reactors

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A finite element method for neutron noise analysis in hexagonal reactors

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dc.contributor.author Vidal-Ferràndiz, Antoni es_ES
dc.contributor.author Ginestar Peiro, Damián es_ES
dc.contributor.author Carreño, Amanda es_ES
dc.contributor.author Verdú Martín, Gumersindo Jesús es_ES
dc.contributor.author Demazière, C. es_ES
dc.date.accessioned 2022-04-27T18:06:10Z
dc.date.available 2022-04-27T18:06:10Z
dc.date.issued 2021-02-22 es_ES
dc.identifier.uri http://hdl.handle.net/10251/182224
dc.description.abstract [EN] The early detection of anomalies through the analysis of the neutron noise recorded by in-core and ex-core instrumentation gives the possibility to take proper actions before such problems lead to safety concerns or impact plant availability. The study of the neutron fluctuations permits detecting and differentiate anomalies depending on their type and possibly to characterize and localize such anomalies. This method is non-intrusive and does not require any external perturbation of the system. To effectively use the neutron noise for reactor diagnostics it is essential to accurately model the effects of the anomalies on the neutron field. This paper deals with the development and validation of a neutron noise simulator for reactors with different geometries. The neutron noise is obtained by solving the frequency-domain two-group neutron diffusion equation in the first order approximation. In order to solve this partial differential equation a code based on a high order finite element method is developed. The novelty of this simulator resides on the possibility of dealing with rectangular meshes in any kind of geometry, thus allowing for complex domains and any location of the perturbation. The finite element method also permits automatic refinements in the cell size (h-adaptability) and in its polynomial degree (p-adaptability) that lead to a fast convergence. In order to show the possibilities of the neutron noise simulator developed a perturbation in a hexagonal two-dimensional reactor is investigated in this paper. es_ES
dc.description.sponsorship This project has received funding from the Euratom research and training programme 2014-2018 under grant agreement No 754316. Also, this work has been partially supported by Spanish Ministerio de Economía y Competitividad under project BES-2015-072901 and financed with the help of a Primeros Proyectos de Investigacin (PAID-06-18), Vicerrectorado de Investigación, Innovación y Transferencia of the Universitat Politecnica de València (UPV). es_ES
dc.language Inglés es_ES
dc.publisher EDP Sciences es_ES
dc.relation info:eu-repo/grantAgreement/UPV//PAID-06-18/ es_ES
dc.relation info:eu-repo/grantAgreement/UPV-VIN//SP20180095//Aproximaciones de alto orden para la ecuación del transporte neutrónico/ es_ES
dc.relation.ispartof EPJ Web of Conferences (Online) es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Neutron noise es_ES
dc.subject Finite element method es_ES
dc.subject Hexagonal geometry es_ES
dc.subject.classification MATEMATICA APLICADA es_ES
dc.subject.classification INGENIERIA NUCLEAR es_ES
dc.title A finite element method for neutron noise analysis in hexagonal reactors es_ES
dc.type Artículo es_ES
dc.type Comunicación en congreso es_ES
dc.identifier.doi 10.1051/epjconf/202124721007 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/754316/EU es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//BES-2015-072901/ES/BES-2015-072901/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Matemática Aplicada - Departament de Matemàtica Aplicada es_ES
dc.description.bibliographicCitation Vidal-Ferràndiz, A.; Ginestar Peiro, D.; Carreño, A.; Verdú Martín, GJ.; Demazière, C. (2021). A finite element method for neutron noise analysis in hexagonal reactors. EPJ Web of Conferences (Online). 247:1-8. https://doi.org/10.1051/epjconf/202124721007 es_ES
dc.description.accrualMethod S es_ES
dc.relation.conferencename Physics of Reactors Conference. Transition to a Scalable Nuclear Future (PHYSOR 2020) es_ES
dc.relation.conferencedate Marzo 29-Abril 02,2020 es_ES
dc.relation.conferenceplace Cambridge, United Kingdom es_ES
dc.relation.publisherversion https://doi.org/10.1051/epjconf/202124721007 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 8 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 247 es_ES
dc.identifier.eissn 2100-014X es_ES
dc.relation.pasarela S\435745 es_ES
dc.contributor.funder MINISTERIO DE ECONOMIA Y EMPRESA es_ES
dc.contributor.funder COMISION DE LAS COMUNIDADES EUROPEA es_ES
dc.contributor.funder UNIVERSIDAD POLITECNICA DE VALENCIA es_ES
dc.contributor.funder Universitat Politècnica de València es_ES


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