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master's thesis
Numerička analiza ribljih staza s vertikalnim pregradama
2017. urn:nbn:hr:157:363397
Grgurica, Anja
University of Rijeka
Faculty of Civil Engineering

Cite this document

Grgurica, A. (2017). Numerička analiza ribljih staza s vertikalnim pregradama (Master's thesis). Rijeka: University of Rijeka, Faculty of Civil Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:157:363397

Grgurica, Anja. "Numerička analiza ribljih staza s vertikalnim pregradama." Master's thesis, University of Rijeka, Faculty of Civil Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:157:363397

Grgurica, Anja. "Numerička analiza ribljih staza s vertikalnim pregradama." Master's thesis, University of Rijeka, Faculty of Civil Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:157:363397

Grgurica, A. (2017). 'Numerička analiza ribljih staza s vertikalnim pregradama', Master's thesis, University of Rijeka, Faculty of Civil Engineering, accessed 22 December 2024, https://urn.nsk.hr/urn:nbn:hr:157:363397

Grgurica A. Numerička analiza ribljih staza s vertikalnim pregradama [Master's thesis]. Rijeka: University of Rijeka, Faculty of Civil Engineering; 2017 [cited 2024 December 22] Available at: https://urn.nsk.hr/urn:nbn:hr:157:363397

A. Grgurica, "Numerička analiza ribljih staza s vertikalnim pregradama", Master's thesis, University of Rijeka, Faculty of Civil Engineering, Rijeka, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:157:363397

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Metadata
TitleNumerička analiza ribljih staza s vertikalnim pregradama
Title (english)Numerical analysis of fish passage with vertical screens
AuthorAnja Grgurica
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
U radu proveden je proracun toka vode kroz riblju stazu proizvoljne geometrije. Proracun je proveden uz pomoc CFD programa OpenFOAM. Numericki model temelji se na hipotezi kontinuuma, odnosno diskretizaciji domene toka strukturiranom mrežom konacnih volumena. Gibanje dvofaznog, nestišljivog fluida u izotermnim termodinamickim uvjetima opisano je vremenski osrednjenim Navier-Stokesovim jednadžbama, k-ɛ modelom turbulencije i VOF metodom. Ovakav tok fluida je opisan skupom parcijalnih diferencijalniih jednadžbi koje treba integrirati po svakom kontrolnom volumenu domene koja je opisana zadanim rubnim uvjetima. Ispitane su cetiri domene toka sa razlicitim razmakom meu pregradama te su usporeeni rezultati. Dobiveni rezultati pokazuju ovisnost pada brzine o broju pregrada te mjesta hidraulickog skoka i najturbulentijeg toka. Ovim se radom htjela pokazati korisnost CFD programa pri modeliranju gibanja fluida u svrhu projektiranja ribljih staza, ali i osjetljivost rješenja o mreži.
Abstract (english)
This thesis conducts calculation of water flow throughout fish pass of arbitrarily geometry. Calculation is conducted using CFD program OpenFOAM. Numerical model is based on continuum hypothesis, meaning that discretization od flow domain is approximated through structured mesh od finite volumes. Motion of two-phase incompressible fluid in isothermic thermodynamic conditions is described with time-averaged Navier-Stokes equation, k-ɛ turbulence model and VOF method. Fluid flow is described with a set of partial differential equations that are integrated on every finite volume specified by given boundary conditions. Four flow domains with different interspace size between barriers are tested and results are compared. Collected results are showing dependency of speed decrease and number of barriers and locations of hydraulic jump and most turbulent flow. This thesis wants to show usefulness of CFD programs in fluid motion modeling with purpose of fish pass design but also to show result sensitivity depending on the mesh.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:157:363397
Study programmeTitle: Civil Engineering; specializations in: Geotechnical Engineering, Hydraulic Engineering, Engineering Modelling, Structural Engineering, Transportation Engineering, Urban Engineering
Course: Geotechnical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
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
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Created on2017-11-16 08:46:35