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master's thesis
Utjecaj trima na ukupni otpor kontejnerskog broda
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. urn:nbn:hr:235:977249
Martić, Katarina
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

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

Cite this document

Martić, K. (2022). Utjecaj trima na ukupni otpor kontejnerskog broda (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:977249

Martić, Katarina. "Utjecaj trima na ukupni otpor kontejnerskog broda." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:235:977249

Martić, Katarina. "Utjecaj trima na ukupni otpor kontejnerskog broda." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:235:977249

Martić, K. (2022). 'Utjecaj trima na ukupni otpor kontejnerskog broda', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 02 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:977249

Martić K. Utjecaj trima na ukupni otpor kontejnerskog broda [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2022 [cited 2024 November 02] Available at: https://urn.nsk.hr/urn:nbn:hr:235:977249

K. Martić, "Utjecaj trima na ukupni otpor kontejnerskog broda", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:235:977249

Metadata
TitleUtjecaj trima na ukupni otpor kontejnerskog broda
Title (english)Effect of trim on the total resistance of a container ship
AuthorKatarina Martić
MentorNastia Degiuli (mentor)
MentorIvana Martić (komentor)
Committee memberIvan Ćatipović (predsjednik povjerenstva)
Committee memberNastia Degiuli (član povjerenstva)
Committee memberNeven Hadžić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2022-07-21, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Shipbuilding
Hydromechanics of Floating and Maritime Structures
Abstract
U ovom radu provedene su numeričke simulacije pokusa otpora za 6750-TEU kontejnerski brod u naravi za pet različitih kutova trima primjenom računalne dinamike fluida (RDF). Numeričke simulacije provedene su primjenom komercijalnog programskog paketa STAR–CCM+ s ciljem određivanja optimalnog trima pri kojem je ukupni otpor broda najmanji. Dan je matematički model nestacionarnog trodimenzijskog viskoznog strujanja fluida sa slobodnom površinom, koji se temelji na Reynoldsovim osrednjenim Navier–Stokesovim jednadžbama (eng. Reynolds Averaged Navier–Stokes, RANS) i k–ω SST modelu turbulencije. Za opis slobodne površine primijenjena je metoda udjela fluida u volumenu (eng. Volume of Fluid, VOF). Proveden je postupak verifikacije za gustoću mreže i vremenski korak u svrhu određivanja ukupne nesigurnosti numeričke simulacije. Nadalje, rezultati numeričkih simulacija validirani su s ekstrapoliranim rezultatima modelskih ispitivanja provedenih u Brodarskom institutu. Analizirano je strujanje duž trupa broda, raspodjela tangencijalnih naprezanja po oplakanoj površini, slike valova oko trupa broda te raspodjela hidrodinamičkog tlaka za različite kutove trima. Konačno, dana je preporuka optimalnog trima za projektnu brzinu broda.
Abstract (english)
In this paper, numerical simulations of resistance test for a 6750–TEU container ship in full scale are carried out at five different trim angles using Computational Fluid Dynamics (CFD). Numerical simulations are performed using a commercial software package STAR-CCM+ in order to determine the optimal trim with the lowest value of the total resistance. A mathematical model of unsteady three-dimensional viscous flow with a free surface based on Reynolds Averaged Navier–Stokes (RANS) equations and k–ω SST turbulence model is given. The Volume of Fluid (VOF) method is used to describe the free surface. A verification study is performed for grid density and time step to determine the total numerical uncertainty. Furthermore, the obtained results of the numerical simulations are validated against the extrapolated results of the model tests performed in the Brodarski institute. The flow along the ship hull, shear stress distribution on the wetted surface, wave patterns, and hydrodynamic pressure distribution are analysed for different trim angles. Finally, the recommendation for the optimal trim at the design speed is given.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:977249
Study programmeTitle: Naval Architecture
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka brodogradnje (magistar/magistra inženjer/inženjerka brodogradnje)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2024-07-21
Terms of useLicence In copyright icon
Created on2022-07-20 06:40:00