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master's thesis
Numeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog sedimenta
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. urn:nbn:hr:235:565821
Lisac, Ana
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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Lisac, A. (2021). Numeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog sedimenta (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:565821

Lisac, Ana. "Numeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog sedimenta." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:565821

Lisac, Ana. "Numeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog sedimenta." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:565821

Lisac, A. (2021). 'Numeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog sedimenta', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:565821

Lisac A. Numeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog sedimenta [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2021 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:235:565821

A. Lisac, "Numeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog sedimenta", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:235:565821

Metadata
TitleNumeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog sedimenta
Title (english)Numerical investigation of interaction between small hydraulic turbines and river sediment dynamics
AuthorAna Lisac
MentorHrvoje Jasak (mentor)
Committee memberDražen Lončar (predsjednik povjerenstva)
Committee memberTomislav Pukšec (član povjerenstva)
Committee memberGoran Šagi (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2021-04-01, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Process Energy Engineering
Abstract
Tema ovog rada je numeričko istraživanje interakcije malih vodnih turbina i dinamike riječnog korita pomoću računalne dinamike fluida. Strujanje vode iza turbine je turbulentno i utječe na sedimentno dno rijeke, što može imati značajan utjecaj na ekosustav rijeke, ali i na stabilnost podvodnih struktura, zbog čega su potrebna daljnja istraživanja. U ovom radu korištene su jednadžbe za opisivanje strujanja i interakcije strujanja fluida sa sedimentom i slobodnom površinom, pomoću foam-extend-a. Proučavana je aksijalna turbina s tri lopatice, a simulacije su provedene za četiri konfiguracije turbina u kanalu: • jedna turbina na sredini kanala, • dvije turbine postavljene koaksijalno na sredini kanala, udaljene za 4dt , • dvije turbine postavljene koaksijalno na sredini kanala, udaljene za 7dt , • dvije turbine postavljene jedna uz drugu kraj bočne strana kanala. Rezultati simulacija uspoređeni su međusobno i s dostupnim rezultatima eksperimenata Računalna dinamika fluida može preuzeti značajnu ulogu u proučavanju utjecaja turbina na morfologiju dna, jer uvelike pojednostavljuje i olakšava proučavanje ove problematike.
Abstract (english)
Scope of this Thesis is numerical investigation of interaction between small hydraulic turbines and river sediment dynamics. Water flow behind turbines is turbulent and affects sediment river bed, which can have significant influence on the river ecosystem, but also on underwater structures stability, and further investigation is needed. In this Thesis equations that describe fluid flow and interaction between fluid and sediment river bed and free surface are used, together with foam-extend. Axial turbine with three blades is observed, and simulations were performed for four configurations of turbines in the channel: one turbine in the centre of the channel, two coaxial turbines, in the centre of the channel, with 4dt distance, two coaxial turbines, in the centre of the channel, with 7dt distance, two turbines positioned side by side, near the channel side. The simulation results were compared mutually and with the available experimental data. Computational Fluid Dynamics can play a significant part in investigation of turbine and river morphology interactions, making the analysis of given problems easier and simpler.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:565821
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 Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) icon
Created on2021-03-25 09:29:07