{"?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-N1MAUA3M/52a9235a-fcab-4ca3-b62d-7086de0028d9/HTML","dcterms:extent":"43 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-N1MAUA3M/aaa5acff-bc2f-43e2-b124-116db42a7e29/PDF","dcterms:extent":"706 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-N1MAUA3M/1e20b2c6-d757-4d9b-a6a0-4db5e8650590/TEXT","dcterms:extent":"50 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-N1MAUA3M","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":["Mori, Mitja","Novak, Lovrenc","Sekavčnik, Mihael"],"dc:format":[{"@xml:lang":"sl","#text":"13 strani"},{"@xml:lang":"sl","#text":"letnik:49"},{"@xml:lang":"sl","#text":"številka:9"},{"@xml:lang":"sl","#text":"str. 445-457"}],"dc:identifier":["ISSN:0039-2480","COBISSID:6795035","URN:URN:NBN:SI:doc-N1MAUA3M"],"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":"sl","#text":"analize numerične"},{"@xml:lang":"sl","#text":"hlajenje konvektivno"},{"@xml:lang":"sl","#text":"numerična analiza"},{"@xml:lang":"sl","#text":"plinske turbine"},{"@xml:lang":"sl","#text":"prenos roplote"},{"@xml:lang":"sl","#text":"števila Nusselt"},{"@xml:lang":"sl","#text":"turbine plinske"},{"@rdf:resource":"http://www.wikidata.org/entity/Q11216"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Konvektivni prenos toplote v vrtečem kanalu kaskade z ravnimi lopaticami| Convective heat transfer inside rotational cascades with flat blades|"},"dc:description":[{"@xml:lang":"sl","#text":"In this paper we present a numerical approach to determining the variation of rotational speed with the convective heat transfer of blade structures. The investigated structure, which is cooled by air, was subjected to an axial hot-air stream in a cross-flow system. In order to exclude the influence of undesirable, aerodynamic flow forces, a simplified geometry was chosen, and the influence of varying the rotational speed was studied. The distributions of heat-transfer rate on the hot side of the structure's wall were determined with CFD calculations. The non-uniformity of the heat transfer increased with the rotational speed due to the increasing impact of centrifugal flow forces on the boundary-layer thickness. The impact of rotational speed on the heat-transfer rate was found not to be significant. The results of the studiedstructure were also used to validate various one-dimensional, empirical, convective heat-transfer models that are commonly applied in engineering practice. In all cases, the flat-wall heat-transfer treatment showed the best agreement with the results of the CFD calculations"},{"@xml:lang":"sl","#text":"V prispevku je obravnavana odvisnost konvektivnega prenosa toplote od vrtilne frekvence na vroči steni turbinske lopatice. Prenos toplote poteka v kriznem sistemu iz aksialnega toka vroeih dimnih plinov na hladilni zrak v kanalu lopatice. Z numeričnim modelom smo simulirali tokovne in energijske razmere v aksialni krožni kaskadi z ravnimi lopaticami pri različnih vrtilnih frekvencah in količini hladilnega zraka, rezultate pa smo zapisali v brezdimenzijski obliki. Izkazalo se je, da ima v obravnavanem primeru razmernik hladilnega zraka bistveno večji vpliv od rotacijskega števila. Rezultate numeričnih simulacij smo primerjali z rezultati enodimenzijskih, polizkustvenih modelov konvektivnega prenosa toplote z različnimi nastavki, ki so v praksi najpogosteje uporabljeni. V primerjavi z rezultati numeričnih analiz vsi trije uporabljeni modeli kazejo pravilno usmeritev, naboljse ujemanje pa dobimo z uporabo modela prenosa toplote skozi ravno steno"}],"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-N1MAUA3M","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:doc-N1MAUA3M"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:doc-N1MAUA3M/aaa5acff-bc2f-43e2-b124-116db42a7e29/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-N1MAUA3M/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:doc-N1MAUA3M"}}}}