{"?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-Q8SF670E/be7036af-e7b3-4add-8582-318effd2907e/HTML","dcterms:extent":"44 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-Q8SF670E/d97f3bc7-64df-47b6-b465-0bb64267759a/PDF","dcterms:extent":"579 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-Q8SF670E/d75c9706-b6d3-41f4-a4fe-6afa4f351e2c/TEXT","dcterms:extent":"45 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-Q8SF670E","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":["Četina, Matjaž","Krzyk, Mario"],"dc:format":[{"@xml:lang":"sl","#text":"12 strani"},{"@xml:lang":"sl","#text":"številka:3"},{"@xml:lang":"sl","#text":"letnik:49"},{"@xml:lang":"sl","#text":"str. 173-184"}],"dc:identifier":["ISSN:0039-2480","COBISSID:6256667","URN:URN:NBN:SI:doc-Q8SF670E"],"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":"lebdeče plavine"},{"@xml:lang":"sl","#text":"matematični modeli"},{"@xml:lang":"sl","#text":"modeli matematični"},{"@xml:lang":"sl","#text":"plavine lebdeče"},{"@xml:lang":"sl","#text":"Ptujsko jezero"},{"@xml:lang":"sl","#text":"transport materiala"},{"@rdf:resource":"http://www.wikidata.org/entity/Q3395306"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Dvodimenzijski matematični model transporta lebdečih plavin| A two-dimensional mathematical model of suspended sediment transport|"},"dc:description":[{"@xml:lang":"sl","#text":"After a brief review of the theoretical basis of the hydrodynamic characteristics of two-dimensional depth-averaged flow in a horizontal plane, in this paper we present an equation for suspended sediment transport. It is an advective-diffusion equation with an added source term that describes the concentration of a suspended sediment caused by sedimentation or errosion. The depth-averaged concentration of the suspended load is a result of an analysis of the transport equation in the vertical plane. The source term definition is based on the transport equation in the vertical plane, which gives a characteristic concentration distribution of the suspended load with a minimum concentration at the surface and a maximum at the bottom of the bed. The calculation results depend on the diference between the inflow (calculated), depth-averaged concentration of the suspension and the averaged equilibrium suspension concentration in a numeric cell under certain hydrodynamic conditions. "},{"@xml:lang":"sl","#text":"Po kratki predstavitvi teoretičnih osnov hidrodinamičnih značilnosti tokov, ki jih obravnavamo kot dvorazsežne v vodoravni ravnini, z globinsko povprečnimi hitrostmi, je v prispevku predstavljena enačba transporta lebdečih plavin, ki je uporabljena v matematičnem modelu. To je advekcijsko-difuzijska enačba z dodatnim izvornim členom, ki opisuje spremembokoncentracije plavin, povzročeno z usedanjem ali dvigovanjem materiala z dna struge. Globinsko povprečno vrednost koncentracije lebdečih plavin smo dobili na podlagi analize transportne enačbe v navpični ravnini. Izračun izvornega člena sloni na transportni enačbi, definirani v navpični ravnini, ki daje značilen razpored koncentracije lebdečih plavin z najmanjšo koncentracijo na površini in največjo na dnu struge. Rezultati izračuna so odvisni od razlike med vtočno (izračunano) globinsko povprečno koncentracijo plavin in povprečno vrednostjo koncentracije plavin v ravnovesnem stanju, za določene hidrodinamične pogoje znotraj kontrolnega volumna. 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