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master's thesis
Analiza utjecaja krutosti hidrokrila na uzgon
2021. urn:nbn:hr:179:855937
Jožić, Danijel
University of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
Department of Mechanical Engineering and Naval Architecture

Cite this document

Jožić, D. (2021). Analiza utjecaja krutosti hidrokrila na uzgon (Master's thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:179:855937

Jožić, Danijel. "Analiza utjecaja krutosti hidrokrila na uzgon." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:855937

Jožić, Danijel. "Analiza utjecaja krutosti hidrokrila na uzgon." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:855937

Jožić, D. (2021). 'Analiza utjecaja krutosti hidrokrila na uzgon', Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, accessed 27 March 2023, https://urn.nsk.hr/urn:nbn:hr:179:855937

Jožić D. Analiza utjecaja krutosti hidrokrila na uzgon [Master's thesis]. Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture; 2021 [cited 2023 March 27] Available at: https://urn.nsk.hr/urn:nbn:hr:179:855937

D. Jožić, "Analiza utjecaja krutosti hidrokrila na uzgon", Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:179:855937

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Metadata
TitleAnaliza utjecaja krutosti hidrokrila na uzgon
AuthorDanijel Jožić
MentorBranko Blagojević https://orcid.org/0000-0002-4361-6804 (mentor)
GranterUniversity of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
(Department of Mechanical Engineering and Naval Architecture)
Split
Defense date and country2021-09-23, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Shipbuilding
Abstract
U ovom radu provjeravan je utjecaj krutosti hidrokrila na koeficijent uzgona. Uzgonska tijela koja su djelomično uronjena imaju široku primjenu u brodograđevnoj i pomorskoj industriji. Sve veći udio novih materijala, poput kompozita i polimera, u proizvodnji tih uzgonskih tijela, smanjuje njihovu krutost te se javlja potreba za razmatranjem interakcije fluid-struktura. U prvom djelu rada provedena je validacija numeričkog modela strujanja vode oko elastičnog hidrokrila. Modalna analiza provedena je metodom konačnih elemenata u računalnom programu FEMAP, dok je simuliranje strujanja vode oko elastičnog modela provedeno metodom konačnih volumena u računalnom programu Numeca FineMarine. Dobiveni rezultati simulacija uspoređeni su sa dostupnim eksperimentalnim rezultatima u svrhu validacije numeričkog modela. U drugom dijelu rada rađene su simulacije s modelima izmijenjene krutosti. Korišteni su modeli s tankostijenom strukturom te modeli sa smanjenim modulom elastičnosti. Analizom rezultata simulacija doneseni su zaključci o utjecaju krutosti strukture na modalne vibracije i koeficijent uzgona djelomično uronjenog hidrokrila.
Abstract (english)
In this paper, the influence of hydrofoil stiffness on lift coefficient was checked. Buoyancy bodies that are partially immersed have wide application in the shipbuilding and maritime industry. In the production of buoyancy bodies from newer materials, such as composit and polymer, there is an increasing share of the occurrence of stiffness reduction and there is a need to review the fluidstructure interaction. In the first part of the paper, the validation of the numerical model of water flow around the elastic hydrofoil was performed. Modal analysis was performed by the finite element method in the computer software FEMAP, while the simulation of water flow around the elastic model was performed by the finite volume method in the computer software Numeca FineMarine. The obtained simulation results were compared with the available experimental results for the purpose of validation of the numerical model. In the second part of the paper, simulations with modified stiffness models were performed. Models with a thin-walled structure and models with a reduced modulus of elasticity were used. By analyzing the simulation results, conclusions were drawn about the influence of structural stiffness on modal vibrations and lift coefficient of a partially immersed hydrofoil.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:179:855937
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 conditionsAccess restricted to authenticated users
Terms of useLicence In copyright icon
Created on2022-10-19 10:47:14