diplomska naloga
Davor Rozman (Author), Matjaž Četina (Mentor), Primož Banovec (Thesis defence commission member), Franci Steinman (Thesis defence commission member), Andrej Širca (Co-mentor), Anton Bergant (Co-mentor)

Abstract

Testiranje programov za račun vodnega udara in uporaba na realnem primeru derivacijske hidroelektrarne

Keywords

hidrotehnika;diplomska dela;prehodni pojavi;vodni udar;numerične metode;metoda karakteristik;implicitna metoda;računalniški programi;VODU;VU;WHAMO;derivacijska hidroelektrarna;

Data

Language: Slovenian
Year of publishing:
Source: Ljubljana
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [D. Rozman]
UDC: 627.8(043.2)
COBISS: 5426017 Link will open in a new window
Views: 2221
Downloads: 749
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Other data

Secondary language: English
Secondary title: Testing programs for the calculation of water hammer and their application in the design of a derivation hydroelectric power plant
Secondary abstract: The purpose of this work is to study hydroelectric transients that occur in hydroelectric power plants and describe the numerical methods which solve basic equations. Then, based on the testing of various computer programs that calculate water hammer effect, we chose the optimal program. With the program a calculation was made for the various closing and opening maneuvers of the turbines in an existing derivation hydroelectric power plant. Investigation showed good matching between results of all three programs VU, VODU and WHAMO for the simulation of water hammer in hydraulic passage systems with shorter closing times. It is much harder to get good results using programs VODU and VU for the simulation of water hammer in hydraulic passage systems with longer closing times. Numerical error caused by rounding results of the calculation leads to major fluctuations. For such simulations the most appropriate program is WHAMO.
Secondary keywords: graduation thesis;hydrology;transient flow;water hammer;numerical methods;method of characteristics;implicent method;computer program;derivation hydroeletric power plant;
File type: application/pdf
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XII, 85 str., [8] str. pril.
Type (ePrints): thesis
Title (ePrints): Testing programs for the calculation of water hammer and their application in the design of a derivation hydroelectric power plant
Keywords (ePrints): prehodni pojavi;vodni udar;numerične metode;metoda karakteristik;implicitna metoda;računalniški program;VU;WHAMO;derivacijska hidroelektrarna
Keywords (ePrints, secondary language): transient flow;water hammer;numerical methods;method of characteristics;implicit method;computer program;VODU;VU;WHAMO;derivation hydroelectric power plant.
Abstract (ePrints): Namen diplomske naloge je spoznati hidravlične prehodne pojave, ki nastopajo v hidroelektrarnah in opisati numerične metode reševanja osnovnih enačb. Nato se na podlagi testiranja različnih programov za račun vodnega udara izbere optimalnega, s katerim se izvede izračun konkretne derivacijske hidroelektrarne za različne manevre zapiranja in odpiranja turbin. Ugotovili smo, da so pri simulacijah pretočnih sistemov s krajšim časom zapiranja za izračun vodnega udara primerni vsi trije programi VU, VODU in WHAMO. Pri simulaciji pretočnega sistema z daljšimi časi zapiranja pa se pri programih VODU in VU pojavijo prevelika nihanja, katerih vzrok je numerična napaka ki nastane pri zaokroževanju rezultatov izračuna. Za takšne simulacije je najprimernejši program WHAMO.
Abstract (ePrints, secondary language): The purpose of this work is to study hydroelectric transients that occur in hydroelectric power plants and describe the numerical methods which solve basic equations. Then, based on the testing of various computer programs that calculate water hammer effect, we chose the optimal program. With the program a calculation was made for the various closing and opening maneuvers of the turbines in an existing derivation hydroelectric power plant. Investigation showed good matching between results of all three programs VU, VODU and WHAMO for the simulation of water hammer in hydraulic passage systems with shorter closing times. It is much harder to get good results using programs VODU and VU for the simulation of water hammer in hydraulic passage systems with longer closing times. Numerical error caused by rounding results of the calculation leads to major fluctuations. For such simulations the most appropriate program is WHAMO.
Keywords (ePrints, secondary language): transient flow;water hammer;numerical methods;method of characteristics;implicit method;computer program;VODU;VU;WHAMO;derivation hydroelectric power plant.
ID: 8312153