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undergraduate thesis
Numeričko određivanje faktora forme trimarana
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. urn:nbn:hr:235:424462
Oreč, Ivan
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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Oreč, I. (2019). Numeričko određivanje faktora forme trimarana (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:424462

Oreč, Ivan. "Numeričko određivanje faktora forme trimarana." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:424462

Oreč, Ivan. "Numeričko određivanje faktora forme trimarana." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:424462

Oreč, I. (2019). 'Numeričko određivanje faktora forme trimarana', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:424462

Oreč I. Numeričko određivanje faktora forme trimarana [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2019 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:235:424462

I. Oreč, "Numeričko određivanje faktora forme trimarana", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:235:424462

Metadata
TitleNumeričko određivanje faktora forme trimarana
Title (english)Numerical assessment of the form factor of trimaran
AuthorIvan Oreč
MentorNastia Degiuli (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2019-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Shipbuilding
Hydromechanics of Floating and Maritime Structures
Abstract
U ovom radu provedeno je istraživanje faktora forme za pet različitih trimaranskih konfiguracija Wigley-eve serije C98-349. Istražen je utjecaj rasporeda simetričnih bočnih trupova u odnosu na srednji trup na faktor forme primjenom računalne dinamike fluida (RDF). U tu svrhu provedeno je deset numeričkih simulacija koristeći programski paket STAR-CCM+ za trimaranske konfiguracije k1, k2, k3, k4 i k7 te za jednotrupni brod. Prikazan je matematički model koji rješava Reynoldsove osrednjene Navier-Stokesove jednadžbe (RANS) te je odabran model turbulencije k-ω SST. Numerički izračunati faktori forme validirani su usporedbom s eksperimentalno dobivenim vrijednostima faktora forme. Prikazane su i komentirane raspodjele tlaka po oplakanoj površini za svaku trimaransku konfiguraciju. Rezultati pokazuju kako je uslijed viskozne interferencije faktor forme trimarana veći u odnosu na faktor forme jednotrupnog broda. Dobiveni rezultati ukazuju na to da trimaranske konfiguracije s većim bočnim razmakom trupova imaju manje vrijednosti faktora forme. Pokazano je da se računalna dinamika fluida može koristiti kao praktičan alat za određivanje faktora forme jednotrupnih i višetrupnih brodova.
Abstract (english)
The investigation on the form factor for five different trimaran configurations of Wigley series C98-349 is carried out in this thesis. The influence of trimaran layout on form factor is assessed using Computational Fluid Dynamics (CFD) by performing ten numerical simulations utilizing software package STAR-CCM+ for trimaran configurations k1, k2, k3, k4, k7 and monohull. Mathematical model based on Reynolds Averaged Navier-Stokes equations (RANS) is presented and k-ω SST turbulence model is selected. The numerically obtained form factors are validated by comparison with experimentally obtained values from factors. Pressure distributions on wetted surface for each trimaran configuration are also shown and discussed. Form factor of trimaran configuration is larger than the form factor of monohull due to the occurence of viscous interference. The obtained results show that trimaran configurations with larger separations have smaller values of form factors. It is shown that CFD can be used as a practical tool for the determination of form factors for both monohull and multihull vessels.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:424462
Study programmeTitle: Naval Architecture
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka brodogradnje (sveučilišni prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka brodogradnje)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-09-24 09:26:38