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Title:Napoved izkoristka francisove turbine z numeričnim izračunom toka
Authors:ID Jošt, Dragica (Author)
ID Škerget, Leopold (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:doc-34NPRFRN
 
Language:Slovenian
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:V prispevku je predstavljena numerična analiza toka v francisovi turbini. Osredotočili smo se na napoved energijskih izgub v toku in napoved izkoristka turbine. Rezultate, dobljene z ločeno analizo toka v vsakem delu turbine, smo primerjali z rezultati ločenega izračuna toka v spirali in skupnega izračuna toka skozi preostalo turbino. Nato smo izračunali tok v francisovi turbini v večjem številu obratovalnih točk, narisali školjčni diagram izkoristka in ga primerjali z izmerjenim. Enak izračun je bil narejen še za primer, ko nimamo izmerjenih vztopnih podatkov. V prispevku je predstavljen tudi vpliv gostote mreže in izbire turbulentnega modela na rezultate.
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Year of publishing:2001
Number of pages:str. 70-82
Numbering:Letn. 47, št. 2
PID:20.500.12556/DKUM-53184 New window
UDC:621.224.24:532.57
ISSN on article:0039-2480
COBISS.SI-ID:4612123 New window
NUK URN:URN:SI:UM:DK:DHWZBZWC
Publication date in DKUM:10.07.2015
Views:1245
Downloads:37
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
JOŠT, Dragica and ŠKERGET, Leopold, 2001, Napoved izkoristka francisove turbine z numeričnim izračunom toka. Strojniški vestnik [online]. 2001. Vol. 47, no. 2, p. 70–82. [Accessed 2 April 2025]. Retrieved from: http://www.dlib.si/details/URN:NBN:SI:doc-34NPRFRN
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:0039-2480
COBISS.SI-ID:762116 New window

Secondary language

Language:English
Title:Using numerical flow analysis to predict the efficiency of a Francis turbine
Abstract:This paper presents a numerical analysis of flow in a Francis turbine. We concentrate on flow -energy losses and efficiency prediction. The results, obtained by a separate analysis of each turbine component, are compared with the results of a separate analysis of flow in a spiral casing end a simultaneous calculation of the flow through the other turbine parts. After this we analysed flow in a Francis turbine at several operating points, an efficiency hill-chart diagram was drawn and compared with the measured one. The some calculation was made for a case where no measured iniet conditions were available. The effect of the grid density and turbulence models on the results is also presented.
Keywords:Francis turbine, turbine efficiency, flow analysis, turbulence models


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