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undergraduate thesis
Računalno modeliranje aerodinamičkog opterećenja zgrade uz primjenu modela turbulencije Reynoldsovog tenzora naprezanja
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. urn:nbn:hr:235:529000
Frančin, Loren
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Frančin, L. (2023). Računalno modeliranje aerodinamičkog opterećenja zgrade uz primjenu modela turbulencije Reynoldsovog tenzora naprezanja (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:529000

Frančin, Loren. "Računalno modeliranje aerodinamičkog opterećenja zgrade uz primjenu modela turbulencije Reynoldsovog tenzora naprezanja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. https://urn.nsk.hr/urn:nbn:hr:235:529000

Frančin, Loren. "Računalno modeliranje aerodinamičkog opterećenja zgrade uz primjenu modela turbulencije Reynoldsovog tenzora naprezanja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. https://urn.nsk.hr/urn:nbn:hr:235:529000

Frančin, L. (2023). 'Računalno modeliranje aerodinamičkog opterećenja zgrade uz primjenu modela turbulencije Reynoldsovog tenzora naprezanja', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 13 February 2025, https://urn.nsk.hr/urn:nbn:hr:235:529000

Frančin L. Računalno modeliranje aerodinamičkog opterećenja zgrade uz primjenu modela turbulencije Reynoldsovog tenzora naprezanja [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2023 [cited 2025 February 13] Available at: https://urn.nsk.hr/urn:nbn:hr:235:529000

L. Frančin, "Računalno modeliranje aerodinamičkog opterećenja zgrade uz primjenu modela turbulencije Reynoldsovog tenzora naprezanja", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:235:529000

Metadata
TitleRačunalno modeliranje aerodinamičkog opterećenja zgrade uz primjenu modela turbulencije Reynoldsovog tenzora naprezanja
Title (english)Computational modelling of aerodynamic loads on a building using the Reynolds stress turbulence model
AuthorLoren Frančin
MentorHrvoje Kozmar (mentor)
Committee memberDražen Lončar (predsjednik povjerenstva)
Committee memberGoran Krajačić (član povjerenstva)
Committee memberDanijel Šestan (član povjerenstva)
Committee memberAnte Marušić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2023-03-01, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Cilj rada je primjena modela turbulencije Reynoldsovog tenzora naprezanja kod računalnog mo- deliranja opstrujavanja zgrade oblika kocke smještene u homogenom atmosferskom graničnom sloju, kako bi se utvrdilo je li spomenutim modelom moguće bolje računalno modelirati opterećenje zgrada u usporedbi s Menterovim k−ω SST modelom. U radu je za razvoj mreže konačnih volumena i računalnu simulaciju korišten programski alat OpenFOAM® , tj. foam-extend-3.2. U radu su iz jednadžbi modela turbulencije Reynoldsovog tenzora naprezanja izvedeni rubni uvjeti koje je potrebno koristiti kako bi se pravilno računalno modeliralo strujanje homogenog atmosferskog graničnog sloja korištenjem tehnike domene preteče u praznoj dvodimenzijskoj računalnoj domeni. Pritom je strujanje u blizini nepropusne hrapave stijenke modelirano zidnom funkcijom temeljenom na aerodinamičkoj duljini hrapavosti površine. Profili fizikalnih veličina dobiveni računalnom analizom strujanja u dvodimenzijskoj domeni su potom korišteni kao rubni uvjeti na ulaznoj granici trodimenzijske računalne domene u kojoj je smješten model zgrade oblika kocke. Računalnom analizom strujanja atmosferskog graničnog sloja oko modela zgrade je pokazano da se korištenjem modela turbulencije Reynoldsovog tenzora naprezanja ne postižu bolji rezultati računalno generirane raspodjele koeficijenta tlaka po stranicama zgrade u odnosu na dostupne eksperimentalne rezultate i računalne rezultate dobivene korištenjem ostalih RANS modela turbulencije.
Abstract (english)
The goal in this thesis is the application of the Reynolds stress tensor turbulence model for modelling the flow over a model of a cubic-shaped building in the atmospheric boundary layer to determine whether it yields better results than when using Menter’s k − ω SST turbulence model. The CFD software used to generate the finite volume mesh and computationally model the given problem is a fork of OpenFOAM® called foam-extend-3.2. Proper boundary conditions for a successful modelling of the homogeneous atmospheric boundary layer using the precursor domain technique in an empty two-dimensional computational domain were derived from the Reynolds stress transport equations. A wall function based on the aerodynamic surface roughness length was used to model the flow near the impermeable rough surface. The resulting profiles were subsequently applied onto the inlet boundary of the three-dimensional computational domain which includes the cubic-shaped building model. It was determined that the flow over a cubic-shaped building in the atmospheric boundary layer created using the Reynolds stress transport turbulence model does not provide a better reproduction on the experimental data of the distribution of the pressure coefficient along various lines on the cubic-shaped building model compared to other RANS turbulence models.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:529000
Study programmeTitle: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering
Course: Engineering Modelling and Computer Simulation
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-02-28 10:21:49