Conference paper Open Access

Neutronic simulation of fuel assembly vibrations in a nuclear reactor

Vidal-Ferràndiz A., Carreño A., Ginestar D., Demazière C., and Verdú G.

DCAT Export

<?xml version='1.0' encoding='utf-8'?>
<rdf:RDF xmlns:rdf="" xmlns:adms="" xmlns:dc="" xmlns:dct="" xmlns:dctype="" xmlns:dcat="" xmlns:duv="" xmlns:foaf="" xmlns:frapo="" xmlns:geo="" xmlns:gsp="" xmlns:locn="" xmlns:org="" xmlns:owl="" xmlns:prov="" xmlns:rdfs="" xmlns:schema="" xmlns:skos="" xmlns:vcard="" xmlns:wdrs="">
  <rdf:Description rdf:about="">
    <dct:identifier rdf:datatype=""></dct:identifier>
    <foaf:page rdf:resource=""/>
        <rdf:type rdf:resource=""/>
        <foaf:name>Vidal-Ferràndiz A., Carreño A., Ginestar D., Demazière C., and Verdú G.</foaf:name>
        <foaf:givenName>Carreño A., Ginestar D., Demazière C., and Verdú G.</foaf:givenName>
        <foaf:familyName>Vidal-Ferràndiz A.</foaf:familyName>
    <dct:title>Neutronic simulation of fuel assembly vibrations in a nuclear reactor</dct:title>
    <dct:issued rdf:datatype="">2019</dct:issued>
    <dcat:keyword>Neutron noise, fuel assembly vibrations, neutron diffusion, frequency domain, time domain</dcat:keyword>
    <frapo:isFundedBy rdf:resource="info:eu-repo/grantAgreement/EC/H2020/754316/"/>
        <dct:identifier rdf:datatype="">10.13039/100010661</dct:identifier>
        <foaf:name>European Commission</foaf:name>
    <dct:issued rdf:datatype="">2019-08-25</dct:issued>
    <owl:sameAs rdf:resource=""/>
        <skos:notation rdf:datatype=""></skos:notation>
    <dct:isVersionOf rdf:resource=""/>
    <dct:description>&lt;p&gt;The mechanical vibrations of fuel assemblies have been shown to give rise to high levels&lt;br&gt; of neutron noise, triggering in some circumstances the necessity to operate nuclear reactors&lt;br&gt; at a reduced power level. This work simulates and analyses the effect in the neutron&lt;br&gt; field of the oscillation of one single fuel assembly without considering thermal-hydraulic&lt;br&gt; feedback. The amplitude of the fuel assembly vibration ranges from 0 to 1 millimetres&lt;br&gt; and this implies the use of fine meshes and accurate numerical solvers. Results show&lt;br&gt; two different effects in the neutron field caused by the fuel assembly vibration. First, a&lt;br&gt; global slow variation of the total neutron power due to a change in the criticality of the&lt;br&gt; system. Second, an in-phase change in the neutron flux with the assembly vibration. This&lt;br&gt; second effect is more important and has a strong spatial dependence. This paper shows&lt;br&gt; a comparison between a time domain analysis and a frequency domain analysis of the&lt;br&gt; phenomena, in order to validate the time domain solution against the frequency domain&lt;br&gt; solution. Numerical results shows a really close match between these two approaches.&lt;/p&gt;</dct:description>
    <dct:accessRights rdf:resource=""/>
      <dct:RightsStatement rdf:about="info:eu-repo/semantics/openAccess">
        <rdfs:label>Open Access</rdfs:label>
    <dct:license rdf:resource=""/>
        <dcat:accessURL rdf:resource=""/>
        <dcat:downloadURL rdf:resource=""/>
  <foaf:Project rdf:about="info:eu-repo/grantAgreement/EC/H2020/754316/">
    <dct:identifier rdf:datatype="">754316</dct:identifier>
    <dct:title>Core monitoring techniques and experimental validation and demonstration</dct:title>
        <dct:identifier rdf:datatype="">10.13039/100010661</dct:identifier>
        <foaf:name>European Commission</foaf:name>
All versions This version
Views 6161
Downloads 9090
Data volume 55.3 MB55.3 MB
Unique views 5757
Unique downloads 8686


Cite as