Dinamska karakterizacija gonilnikovega obroča SAXO turbine

magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo

Žiga Mesec (Author), Gregor Čepon (Mentor), Domen Ocepek (Co-mentor)

Abstract

Dinamska karakterizacija mehanskih komponent je v sodobnem inženirstvu ključnega pomena za zagotavljanje varnega, zanesljivega in dolgotrajnega delovanja konstrukcij. Še posebej so temu izpostavljeni sistemi, ki so podvrženi dinamičnim obremenitvam, kot so to vodne turbine. Magistrsko delo bo obravnavalo gonilnikov obroč, to je del vodne turbine tipa Saxo. Namen naloge je preko izvajanja numeričnih simulacij statične in modalne analize v programu Ansys definirati najboljšo konstrukcijsko rešitev iz vidika prisotnosti vertikalnih in obodnih reber v modelu obroča. Poleg tega pa je namen izvesti tudi primerjavo med modalnimi parametri v različnih medijih ter ovrednotiti ustreznost uporabe izkustvenih korelacijskih faktorjev. Analiza rezultatov je pokazala, da je obroč z vertikalnimi rebri najboljša kombinacija iz vidika trdnosti in izdelave. Prav tako je bilo ugotovljeno, da se teoretični redukcijski faktorji lastnih frekvenc v zraku in vodi ujamejo z rezultati modalne analize ob prisotnosti različnih medijev.

Keywords

magistrske naloge;gonilnikovi obroči;vodne turbine;Saxo turbine;numerične simulacije;metoda končnih elementov;mehansko trdnostne analize;modalna analiza;ansys;

Data

Language:	Slovenian
Year of publishing:	2025
Typology:	2.09 - Master's Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[Ž. Mesec]
UDC:	621.8:621.224:539.4(043.2)
COBISS:	247324675
Views:	96
Downloads:	17
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Dynamic characterization of the runner chamber of the SAXO turbine
Secondary abstract:	Dynamic characterization of mechanical components is of vital importance in modern engineering to ensure the safe, reliable and long-term operation of structures. This is particularly relevant for systems subjected to dynamic loads, such as hydraulic turbines. The thesis focuses on the runner chamber, which is a component of s Saxo-type hydraulic turbine. The aim of the work is to determine the optimal structural design with respect to the presence of vertical and circumferential ribs on the runner chamber's model by performing numerical simulations of static and modal analyses using Ansys. Additionally, the goal is to compare modal parameters in different media and to evaluate the applicability of empirical correlation factors. The analysis of the results showed, that the runner chamber with vertical ribs represents the best combination in terms of strenght and manufacturability. It was also found, that the theoretical reduction factors for natural frequencies in air in water match results of modal analysis in the presence of different media.
Secondary keywords:	master thesis;runner chambers;water turbines;Saxo turbines;numerical simulations;finite element method;mechanical strenght analysis;modal analysis;ansys;
Type (COBISS):	Master's thesis/paper
Study programme:	0
Thesis comment:	Univ. Ljubljana, Fak. za strojništvo
Pages:	XXII, 91 str.
ID:	27211628