{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-WG4C5YF5/b405dda2-46bd-4a98-a702-c9a0e9f7a850/HTML","dcterms:extent":"53 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-WG4C5YF5/f667e6ad-1d69-4202-8ea6-7a8e204e2937/PDF","dcterms:extent":"251 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-WG4C5YF5/e35fb46f-6a6b-41f0-b572-f110cacb12c2/TEXT","dcterms:extent":"51 KB"}],"edm:TimeSpan":{"@rdf:about":"1999-2025","edm:begin":{"@xml:lang":"en","#text":"1999"},"edm:end":{"@xml:lang":"en","#text":"2025"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-WG4C5YF5","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-6QOUKQ9A"},{"@xml:lang":"sl","#text":"Strojniški vestnik"}],"dcterms:issued":"2003","dc:creator":["Mavko, Borut","Prošek, Andrej"],"dc:format":[{"@xml:lang":"sl","#text":"12 strani"},{"@xml:lang":"sl","#text":"številka:4"},{"@xml:lang":"sl","#text":"letnik:49"},{"@xml:lang":"sl","#text":"str. 218-229"}],"dc:identifier":["ISSN:0039-2480","COBISSID:6325787","URN:URN:NBN:SI:doc-WG4C5YF5"],"dc:language":["en","sl"],"dc:publisher":[{"@xml:lang":"sl","#text":"Association of Mechanical Engineers and Technicians of Slovenia et al."},{"@xml:lang":"sl","#text":"Zveza strojnih inženirjev in tehnikov Slovenije et al."}],"dc:subject":[{"@xml:lang":"en","#text":"BETHSY"},{"@xml:lang":"sl","#text":"jedrski reaktorji"},{"@xml:lang":"sl","#text":"natančnost"},{"@xml:lang":"sl","#text":"natančnost izračunov"},{"@xml:lang":"sl","#text":"NSA-SARBM"},{"@xml:lang":"sl","#text":"programi termohidravlični"},{"@xml:lang":"sl","#text":"termohidravlični programi"},{"@rdf:resource":"http://www.wikidata.org/entity/Q272035"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Ocenjevanje natančnosti napovedi termohidravličnih programov| The accuracy quantification of thermal-hydraulic code predictions|"},"dc:description":[{"@xml:lang":"sl","#text":"Recently significant attention has been paid in code accuracy issues in predicting the dynamic responses of nuclear reactor systems. Though significant progress has been made, only a few reliable and general tools to quantify code accuracy are available. A new Stochastic Approximation Ratio Based Method (SARBM) was proposed for accuracy quantification. The objective of this study was to investigate and qualify the proposed method. The RELAP5/MOD3.2 thermal-hydraulic code calculations and the BETHSY experimental data were used in the process of qualifying the SARBM with a Fast Fourier Transform Based Method (FFTBM). The obtained results showed that the SARBM was able to satisfactorily predict the accuracy of the calculated transient trends when visually comparing plots and comparing the results with the results obtained by the qualified FFTBM. A new figure of merit for code accuracy, called the accuracy factor (AF), was proposed instead of the stohastic approximation ratio to make the total accuracy calculation with the SARBM more like the FFTBM approach. The accuracy results obtained for the selected BETHSY tests suggest combining the SARBM with the FFTBM for accuracy quantification rather than using it independently"},{"@xml:lang":"sl","#text":"V zadnjem času je velika pozornost namenjena vprašanju natančnosti napovedi termohidravličnih programov pri računanju dinamičnih odzivov sistemov jedrskih reaktorjev. Kljub velikemu napredku je zelo malo zanesljivih in splošnih orodij za ocenjevanje natančnosti računalniških izračunov. Za merljivost natančnosti programa je predlagana nova metoda na temelju naključnostne stopnje aproksimacije (NSA - SARBM). Namen študije je bil tudi raziskati in dokazati primernost predlagane metode.V postopku kvalifikacije metode NSA z metodo na podlagi hitre Fourierjeve preslikave (HFP - FFTBM)so bili uporabljeni izračuni termohidravličnega računalniškega programa RELAP5/MOD3.2 in eksperimentalni podatki iz naprave BETHSY. Z grafično primerjavo potekov in primerjavo natančnosti izračunov, dobljenih z metodama NSA in HFP smo pokazali, da metoda NSA dobro napove natančnost izračunanih potekov prehodnih pojavov. Da bi bil izračun natančnosti z metodo NSA podoben postopku z metodo HFP, smo predlagali novo mero za oceno natančnosti, imenovano količnik natančnosti (KN - AF).Dobljeni rezultati za natančnost izbranih BETHSY poskusov kažejo, da je bolje združiti metodi NSA in HFP za oceno natančnosti, kakor pa metodo NSA uporabljati samostojno"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-WG4C5YF5","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-WG4C5YF5"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-WG4C5YF5/f667e6ad-1d69-4202-8ea6-7a8e204e2937/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Univerza v Ljubljani, Fakulteta za strojništvo"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-WG4C5YF5/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-WG4C5YF5"}}}}