{"?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-82QVJ1K9/c4205b67-252e-42a6-8604-868c5e9ee63c/PDF","dcterms:extent":"1141 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-82QVJ1K9/73ae4c29-e1fd-4d33-8d55-184cd0c87997/TEXT","dcterms:extent":"0 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-82QVJ1K9","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-WP8SPN4L"},{"@xml:lang":"sl","#text":"Acta hydrotechnica"}],"dcterms:issued":"2025","dc:creator":["Abdulkhaev, Zokhidjon","Arifjanov, Aybek","Madaliev, Murodil","Madrakhimov, Mamadali","Sattorov, Alimardon"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:38"},{"@xml:lang":"sl","#text":"številka:68"},{"@xml:lang":"sl","#text":"str. 1-14"}],"dc:identifier":["ISSN:0352-3551","DOI:10.15292/acta.hydro.2025.01","COBISSID_HOST:235669251","URN:URN:NBN:SI:doc-82QVJ1K9"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Fakulteta za gradbeništvo in geodezijo"},"dc:subject":[{"@xml:lang":"sl","#text":"finite volume model"},{"@xml:lang":"sl","#text":"flow pattern"},{"@xml:lang":"sl","#text":"flow regulating columns"},{"@xml:lang":"sl","#text":"flow velocity"},{"@xml:lang":"sl","#text":"k-? model"},{"@xml:lang":"en","#text":"model volumna tekočine"},{"@xml:lang":"sl","#text":"Navier–Stokes equations"},{"@xml:lang":"en","#text":"Navier-Stokesove enačbe"},{"@xml:lang":"en","#text":"pretočna hitrost"},{"@xml:lang":"sl","#text":"rectification scheme"},{"@xml:lang":"en","#text":"rektifikacijska shema"},{"@xml:lang":"en","#text":"stebri za uravnavanje pretoka"},{"@xml:lang":"en","#text":"vzorec pretoka"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Numerical simulation of the flow rectification measures in the forebay of the pumping station| Numerične simulacije ukrepov za uravnavanje pretoka v vtočnem bazenu črpališča|"},"dc:description":[{"@xml:lang":"sl","#text":"The kinematics of flow movement in the forebays of pumping stations significantly influence the efficiency of pump operation. This study addresses the issue of sediment accumulation caused by improper flow velocity distribution in the intake structures of pumping stations. Research was conducted at the water intake structure of Uzbekistan’s Dehqonobod pumping station, located in Quva district, Fergana region. The study involved analyzing hydrodynamic processes within the intake structure based on the principles of fluid motion, combining experimental approaches with simulations using the COMSOL Multiphysics software suite to develop a 3D structural model of the prototype intake structure. Additionally, numerical simulations were performed using the Newton-Raphson scheme and the realizable k-? turbulence model for comparative analysis and evaluation. To ensure proper flow velocity distribution, six vertical columns were arranged in a triangular pattern relative to the flow movement, with a spacing of 1 meter between them. This arrangement was proposed so as to enhance technical and economic efficiency. The results of the study demonstrated that the installation of vertical columns increased the flow velocity near the right and left walls of the forebay, achieving a variation in velocity distribution of up to 20%. Specific recommendations were developed to optimize the hydrodynamic conditions and improve the pumping station's operational efficiency"},{"@xml:lang":"sl","#text":"Gibanje toka v vtočnih bazenih črpališč pomembno vpliva na učinkovitost delovanja črpalk. Študija obravnava vprašanje kopičenja plavin, ki ga povzroča neustrezna porazdelitev pretočnih hitrosti v zajemnih objektih črpališč. Raziskave so bile izvedene na vtoku v črpališče Dehqonobod v okrožju Quva v regiji Fergana, Uzbekistan. Študija je vključevala analizo hidrodinamičnih procesov znotraj zajemnega objekta na podlagi principov gibanja tekočin, pri čemer smo eksperimentalne pristope kombinirali s simulacijami z uporabo programske opreme COMSOL Multiphysics za razvoj 3D strukturnega modela prototipnega zajemnega objekta. Poleg tega so bile za primerjalno analizo in oceno izvedene numerične simulacije z uporabo Newton-Raphsonove sheme in realizacijski k-? turbulentni model. Da bi zagotovili pravilno porazdelitev pretočnih hitrosti, je bilo šest navpičnih stebrov razporejenih v trikotnem vzorcu glede na gibanje toka, razdalja med njimi je bila 1 meter. Ta ureditev je bila predlagana za povečanje tehnične in ekonomske učinkovitosti. Rezultati študije so pokazali, da je namestitev navpičnih stebrov povečala hitrost toka v bližini desne in leve stene vtočnega bazena in dosegla do 20-odstotno spremembo v porazdelitvi hitrosti. Pripravljena so bila posebna priporočila za optimizacijo hidrodinamičnih pogojev in izboljšanje obratovalne učinkovitosti črpališča"}],"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-82QVJ1K9","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-82QVJ1K9"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-82QVJ1K9/c4205b67-252e-42a6-8604-868c5e9ee63c/PDF"},"edm:rights":{"@rdf:resource":"http://creativecommons.org/licenses/by-nc-sa/4.0/"},"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 gradbeništvo in geodezijo"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-82QVJ1K9/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-82QVJ1K9"}}}}