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master's thesis
Numerička analiza utjecaja hrapavosti korita na kinematičke veličine hidrauličkog skoka
2017. urn:nbn:hr:157:501669
Brusić, Daniel
University of Rijeka
Faculty of Civil Engineering

Cite this document

Brusić, D. (2017). Numerička analiza utjecaja hrapavosti korita na kinematičke veličine hidrauličkog skoka (Master's thesis). Rijeka: University of Rijeka, Faculty of Civil Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:157:501669

Brusić, Daniel. "Numerička analiza utjecaja hrapavosti korita na kinematičke veličine hidrauličkog skoka." Master's thesis, University of Rijeka, Faculty of Civil Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:157:501669

Brusić, Daniel. "Numerička analiza utjecaja hrapavosti korita na kinematičke veličine hidrauličkog skoka." Master's thesis, University of Rijeka, Faculty of Civil Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:157:501669

Brusić, D. (2017). 'Numerička analiza utjecaja hrapavosti korita na kinematičke veličine hidrauličkog skoka', Master's thesis, University of Rijeka, Faculty of Civil Engineering, accessed 23 December 2024, https://urn.nsk.hr/urn:nbn:hr:157:501669

Brusić D. Numerička analiza utjecaja hrapavosti korita na kinematičke veličine hidrauličkog skoka [Master's thesis]. Rijeka: University of Rijeka, Faculty of Civil Engineering; 2017 [cited 2024 December 23] Available at: https://urn.nsk.hr/urn:nbn:hr:157:501669

D. Brusić, "Numerička analiza utjecaja hrapavosti korita na kinematičke veličine hidrauličkog skoka", Master's thesis, University of Rijeka, Faculty of Civil Engineering, Rijeka, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:157:501669

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Metadata
TitleNumerička analiza utjecaja hrapavosti korita na kinematičke veličine hidrauličkog skoka
Title (english)Numerical analysis of the influence of roughness on kinematic characteristics of hydraulic jump
AuthorDaniel Brusić
MentorVanja Travaš (mentor)
Committee memberNevenka Ožanić (predsjednik povjerenstva)
Committee memberIgor Ružić (član povjerenstva)
Committee memberVanja Travaš (član povjerenstva)
GranterUniversity of Rijeka
Faculty of Civil Engineering
Rijeka
Defense date and country2017-11-14, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Civil Engineering
Hydrotechnology
Abstract
Hidraulički skokovi su vrlo atraktivni za proučavanje zbog visokog intenziteta turbulencije koji se u njima javlja, kao i zbog toga što su vrlo važan fenomen s praktičnog stajališta. Hidraulički skokovi se često koriste kao vrlo učinkovit način disipacije energije. Napravljen je numerički model toka koji simulira hidraulički skok unutar pravokutnog otvorenog kanala. Na početku rada dan je matematički model strujanja fluida. Prikazane su jednadžbe koje opisuju k-ɛ model turbulencije kao i "Volume of Fluid" metoda, metoda koja se koristi za rješavanje dvofaznog strujanja uida. OpenFOAM software je korišten za simulaciju polja toka u domeni te se zatim provela parametarska analiza polja toka unutar hidrauličkog skoka. Rezultati prikazuju disipaciju mehaničke energije uzrokovane viskoznim silama te aproksimaciju turbulentne strukture toka. Simulacija se provela za pet različitih razina hrapavosti kako bi se provjerilo je li opravdano zanemariti hrapavost korita kada se predviđaju kinematička svojstva hidrauličkoga skoka.
Abstract (english)
Due to its high intensity of turbulence, hydraulic jumps are very attractive to study but also very important phenomenon from the practical point of view. Hydraulic jumps are often used as an eective way of dissipating energy. A numerical model was used to simulate a hydraulic jump inside a rectangular open channel. At the beginning of the thesis, a mathematical model of ow is given. All the equations that describe the k-ɛ turbulence model are presented as well as the "Volume of Fluid" method for solving a two phase ow. To perform a particular parametric analysis of the ow inside the hydraulic jump, the software OpenFOAM was used to numerically reproduce the ow eld. Results show the dissipation of mechanical energy caused by the viscous forces, and the approximation of the turbulent structure of the ow. The simulation was run for ve dierent roughness cases in order to glimpse at the interesting proposition that wall roughness can not be neglected when predicting the kinematic properties of a jump.
Keywords
Keywords (english)
Languageenglish
URN:NBNurn:nbn:hr:157:501669
Study programmeTitle: Civil Engineering; specializations in: Geotechnical Engineering, Hydraulic Engineering, Engineering Modelling, Structural Engineering, Transportation Engineering, Urban Engineering
Course: Hydraulic Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2017-11-16 10:48:22