diplomska naloga
Teja Jeglič (Avtor), Dušan Žagar (Mentor), Boris Kompare (Član komisije za zagovor), Matjaž Mikoš (Član komisije za zagovor), Viktor Grilc (Član komisije za zagovor), Gregor Petkovšek (Komentor)

Povzetek

Modeliranje razlitja nafte v Tržašem zalivu

Ključne besede

gradbeništvo;diplomska dela;VKI;UNI;razlitje nafte;numerično modeliranje;Eulerjev pristop;advekcija;difuzija;Tržaški zaliv;

Podatki

Jezik: Slovenski jezik
Leto izida:
Izvor: Ljubljana
Tipologija: 2.11 - Diplomsko delo
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik: [T. Jeglič]
UDK: 519.61/.64:532.5:551.46:665.61(043.2)
COBISS: 5063521 Povezava se bo odprla v novem oknu
Št. ogledov: 1908
Št. prenosov: 510
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Oil spill modelling in the Gulf of Trieste
Sekundarni povzetek: During the last two decades modeling tools called Nafta and Nafta2 were developed at the Faculty of Civil and Geodetic Engineering. The tool is based on the Lagrangian description of oil-spill problem, where the oil slick is split into oil droplets moving according to the surrounding velocity field. An alternative approach using Eulerian description of processes, which are relevant for spreading of oil slick on the sea surface is presented. Advection, diffusion due to gravity of oil and evaporation are also taken into account. The oil slick is represented as a continuous layered medium with the oil slick thickness as a main variable. The diffusion due to gravity-viscosity forces is precisely a function of the oil slick thickness, which results in a more natural description of this process within the proposed model compared to the Lagrangian-based particle tracking method used in all currently available modeling tools. Fundamentals of the new model are described in detail and are supported by numerous numerical simulations programmed in high-level technical computing language MATLAB. The Euler approach is also applied in a case study of the Gulf of Trieste and compared with the existing model Nafta2, including an upgrade with a time-dependent velocity field.
Sekundarne ključne besede: graduation thesis;oil spill;numerical models;Eulerian approach;advection;difussion;Gulf of Trieste;
Vrsta datoteke: application/pdf
Vrsta dela (COBISS): Diplomsko delo
Komentar na gradivo: Univ. Ljubljana, Fakulteta za gradbeništvo in geodezijo, Univerzitetni študij gradbeništva, Hidrotehnična smer
Strani: IX, 51 str.
Vrsta dela (ePrints): thesis
Naslov (ePrints): Oil spill modelling in the Gulf of Trieste
Ključne besede (ePrints): razlitje nafte;numerično modeliranje;Eulerjev pristop;advekcija;difuzija;Tržaški zaliv
Ključne besede (ePrints, sekundarni jezik): Oil spill;Numerical models;Eulerian approach;Advection;Diffusion;Gulf of Trieste
Povzetek (ePrints): V zadnjih dveh desetletjih je bilo na Fakulteti za gradbeništvo in geodezijo razvito orodje Nafta in Nafta2, ki temelji na Lagrangeovem opisu problema razlitja nafte v morju. Po Lagrangeovem opisu nafto obravnavamo kot skupek delcev, ki se gibljejo v danem hitrostnem polju. V tem diplomskem delu je predstavljen alternativen pristop, kjer pri numerični simulaciji uporabimo Eulerjev opis procesov, ki so pomembni pri modeliranju širjenja nafte po površini morja, kot so to na primer advekcija, difuzija zaradi lastne teže nafte in izhlapevanje. Takšen pristop omogoča obravnavo naftnega madeža kot porazdeljeno maso na vodni površini, kjer v enačbah kot glavna spremenljivka nastopa debelina naftnega madeža. Ker je proces difuzije zaradi lastne teže odvisen od debeline naftnega madeža na danem mestu, je v primerjavi z obstoječimi modeli, ki temeljijo na Lagrangeovi metodi sledenja delcev, formulacija difuzije v predlaganem modelu naravnejša. Osnovni principi novega modela so natančno predstavljeni in podprti s številnimi simulacijami, ki so bile izdelane v programu za matematično modeliranje MATLAB. Eulerjev pristop uporabimo na zgledu Tržaškega zaliva in ga primerjamo z obstoječim programom Nafta2, ter ga tudi nadgradimo za primer, ko se hitrostno polje s časom spreminja.
Povzetek (ePrints, sekundarni jezik): During the last two decades modeling tools called Nafta and Nafta2 were developed at the Faculty of Civil and Geodetic Engineering. The tool is based on the Lagrangian description of oil-spill problem, where the oil slick is split into oil droplets moving according to the surrounding velocity field. An alternative approach using Eulerian description of processes, which are relevant for spreading of oil slick on the sea surface is presented. Advection, diffusion due to gravity of oil and evaporation are also taken into account. The oil slick is represented as a continuous layered medium with the oil slick thickness as a main variable. The diffusion due to gravity-viscosity forces is precisely a function of the oil slick thickness, which results in a more natural description of this process within the proposed model compared to the Lagrangian-based particle tracking method used in all currently available modeling tools. Fundamentals of the new model are described in detail and are supported by numerous numerical simulations programmed in high-level technical computing language MATLAB. The Euler approach is also applied in a case study of the Gulf of Trieste and compared with the existing model Nafta2, including an upgrade with a time-dependent velocity field.
Ključne besede (ePrints, sekundarni jezik): Oil spill;Numerical models;Eulerian approach;Advection;Diffusion;Gulf of Trieste
ID: 8309462