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Napoved izkoristka in kavitacije z numeričnim izračunom toka v francisovi turbiniJošt, Dragica ; Škerget, LeopoldǂV ǂprispevku 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. Na kratko obravnavamo še napoved kavitacije z numeričnim izračunom.Source: Zbornik del (Str. 5-17)Type of material - conference contributionPublish date - 2001Language - slovenianCOBISS.SI-ID - 6679062
Author
Jošt, Dragica |
Škerget, Leopold
Topics
turbine francisove |
izkoristek turbin |
analize toka |
modeli turbulentni |
mehanika fluidov |
Francisova turbina |
izkoristek turbine |
kavitacija |
numerična analiza toka |
turbulentni modeli |
fluid mechanics |
Francis turbine |
turbine efficiency |
cavitation |
numerical flow analysis |
turbulent models
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Jošt, Dragica | 05388 |
Škerget, Leopold | 06428 |
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