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master's thesis
Validacija sprege gibanja krutog tijela i računalne dinamike fluida u frekvencijskoj domeni
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. urn:nbn:hr:235:234447
Volarić, Filip
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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Volarić, F. (2017). Validacija sprege gibanja krutog tijela i računalne dinamike fluida u frekvencijskoj domeni (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:234447

Volarić, Filip. "Validacija sprege gibanja krutog tijela i računalne dinamike fluida u frekvencijskoj domeni." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:234447

Volarić, Filip. "Validacija sprege gibanja krutog tijela i računalne dinamike fluida u frekvencijskoj domeni." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:234447

Volarić, F. (2017). 'Validacija sprege gibanja krutog tijela i računalne dinamike fluida u frekvencijskoj domeni', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 26 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:234447

Volarić F. Validacija sprege gibanja krutog tijela i računalne dinamike fluida u frekvencijskoj domeni [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2017 [cited 2024 December 26] Available at: https://urn.nsk.hr/urn:nbn:hr:235:234447

F. Volarić, "Validacija sprege gibanja krutog tijela i računalne dinamike fluida u frekvencijskoj domeni", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:235:234447

Metadata
TitleValidacija sprege gibanja krutog tijela i računalne dinamike fluida u frekvencijskoj domeni
Title (english)Validation of rigid body motion and computational fluid dynamics in spectral space
AuthorFilip Volarić
MentorHrvoje Jasak (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2017-12-08, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
General Mechanical Engineering (Construction)
Abstract
U području računalne dinamike fluida se u posljednih desetak godina razvija metoda harmoničke ravnoteže koja transformira problem tranzijentnog periodičnog strujanja u sustav međusobno ovisnih stacionarnih problema. Iako se metoda harmoničke ravnoteže najviše razvila za jednofazna strujanja u području turbostrojeva, isti princip može se primjeniti na simulaciju dvofaznih strujanja sa slobodnom površinom koja se javljaju u području brodske hidrodinamike. Tijekom projektiranja forme broda vrlo je bitno dobro procijeniti silu otpora pri plovidbi u valovitom moru, pa je stoga bitno povezati strujanje fluida i gibanje objekta koje je uzrokovano strujanjem. Budući da je razvijena metoda harmoničke ravnoteže za dvofazna strujanja sa slobodnom površinom, potrebno je razviti komplementarnu metodu za proračun gibanja krutog tijela. U ovom radu prvo je dan opis metode harmoničke ravnoteže koja se koristi za simulaciju dvofaznog strujanja, te je nakon toga dan detaljan izvod algoritma za gibanje tijela u frekvencijskoj domeni. Novi algoritam je testiran na dva različita slučaja. Rezultati prvog slučaja su uspoređeni sa analitičkim rješenjem, dok su rezultati drugog slučaja uspoređeni s rješenjem tranzijentne simulacije.
Abstract (english)
Over the last decade the Harmonic Balance (HB) method was developed in the field of Computer Fluid Dynamics (CFD). HB method transforms a transient periodic problem into a set of coupled steady-state problems. Although the HB method was first applied to single- phase flows in the field of turbomachinery, it is also applicable to two-phase free surface flows such as the ones that can be found in the field of naval hydrodynamics. In the field of naval hydrodynamic it is very important to accurately assess the drag force of the ship in waves during the design process, so it is necessary to couple fluid flow and motion of the ship. Hence, the HB method can only be used in the assessment of drag force if the corresponding spectral rigid body motion algorithm is developed. In this thesis HB method is described first, which is used to simulate flow, and then a detailed description of spectral rigid body motion algorithm is given. The new algorithm is validated on two test cases. The results of the first case are compared to an analytical solution, and the results of the second case are compared with a transient simulation.
Keywords
Keywords (english)
Languageenglish
URN:NBNurn:nbn:hr:235:234447
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-05-22 20:59:30