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master's thesis
Poboljšanje geometrije difuzora vodne turbine korištenjem J-utora
Rijeka: University of Rijeka, Faculty of Engineering, 2023. urn:nbn:hr:190:109923
Petrc, Leona
University of Rijeka
Faculty of Engineering
Department of Fluid Mechanics and Computational Engineering
Section of Fluid Mechanics and Hydraulic Machines

Institutional repository: Repository of the University of Rijeka, Faculty of Engineering

Cite this document

Petrc, L. (2023). Poboljšanje geometrije difuzora vodne turbine korištenjem J-utora (Master's thesis). Rijeka: University of Rijeka, Faculty of Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:190:109923

Petrc, Leona. "Poboljšanje geometrije difuzora vodne turbine korištenjem J-utora." Master's thesis, University of Rijeka, Faculty of Engineering, 2023. https://urn.nsk.hr/urn:nbn:hr:190:109923

Petrc, Leona. "Poboljšanje geometrije difuzora vodne turbine korištenjem J-utora." Master's thesis, University of Rijeka, Faculty of Engineering, 2023. https://urn.nsk.hr/urn:nbn:hr:190:109923

Petrc, L. (2023). 'Poboljšanje geometrije difuzora vodne turbine korištenjem J-utora', Master's thesis, University of Rijeka, Faculty of Engineering, accessed 17 February 2025, https://urn.nsk.hr/urn:nbn:hr:190:109923

Petrc L. Poboljšanje geometrije difuzora vodne turbine korištenjem J-utora [Master's thesis]. Rijeka: University of Rijeka, Faculty of Engineering; 2023 [cited 2025 February 17] Available at: https://urn.nsk.hr/urn:nbn:hr:190:109923

L. Petrc, "Poboljšanje geometrije difuzora vodne turbine korištenjem J-utora", Master's thesis, University of Rijeka, Faculty of Engineering, Rijeka, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:190:109923

Metadata
TitlePoboljšanje geometrije difuzora vodne turbine korištenjem J-utora
Title (english)Improvement of Water Turbine Diffuser Geometry Using J-Section
AuthorLeona Petrc
MentorZoran Čarija (mentor)
MentorIvana Lučin (komentor)
Committee memberGoran Cukor (predsjednik povjerenstva)
Committee memberZoran Čarija (član povjerenstva)
Committee memberSunčana Smokvina Hanza (član povjerenstva)
GranterUniversity of Rijeka
Faculty of Engineering
(Department of Fluid Mechanics and Computational Engineering)
(Section of Fluid Mechanics and Hydraulic Machines)
Rijeka
Defense date and country2023-11-23, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U ovom diplomskog radu ukratko je opisan princip rada i vrste difuzora. Detaljnije je objašnjen način nastanka i tipovi kavitacije kao i negativni efekti. Posebno su istaknute metode za smanjenje kavitacije te utjecaj na konstrukcijske veličine. U nastavku rada provedene su numeričke simulacije 3D strujanja kroz difuzor bez J-utora i za tri odabrane geometrije J-utora. Za navedene geometrije promatran je koeficijent hidrauličkih gubitaka C_d i koeficijent oporavka tlaka C_p. Rezultati simulacija prikazani su grafički i integralno te su prokomentirani dobiveni rezultati korištenjem različitih dimenzija J-utora. Na kraju rada dane su smjernice za daljnje poboljšanje provedenih simulacija kako bi se navedena metodologija mogla koristiti u praksi za dobivanje optimalne geometrije J-utora.
Abstract (english)
This thesis briefly describes the working principle and types of diffusers. The method of formation and types of cavitation as well as the negative effects are detail explained. Methods for reducing cavitation and the impact on structural dimensions are particularly highlighted. In the continuation of the work, numerical simulations of the 3D flow through the diffuser without J-sections and for three selected geometries of J-sections were carried out. For the specified geometries, the coefficient of hydraulic losses Cd and the coefficient of pressure recovery Cp were observed. The results of the simulation are presented graphically and integrally, and the results obtained using different dimensions of the J-sections are commented on. At the end of the paper, guidelines are given for further improvement of the performed simulations so that the stated methodology can be used in practice to obtain the optimal J-section geometry.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:190:109923
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 4.0 International (CC BY 4.0) icon
Created on2023-11-18 13:27:11