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Numeričko modeliranje ekstremnih slučajeva hidromehaničkih prelaznih procesa na HE Perućica [Elektronski vir] = Numerical modelling of extreme hydraulic transients on Perućica HPP
Karadžić, Uroš ; Vukoslavčević, Petar ; Bergant, Anton
Dobro poznavanje hidromehaničkih prelaznih procesa u dovodnim i odvodnim sistemima hidroelektrana je neophodno sa aspekta njihovog bezbjednog rada. U ovom radu su numerički modelirani ekstremni ...slučajevi prelaznih procesa na visokopritisnoj hidroelektrani Perućica. Razmatrane su promjene pritisaka u cjevovodima i dovodnom tunelu kao i oscilacije nivoa vode u vodostanu za slučajeve ispada i starta elektrane. Sistem pod pritiskom HE Perućica je modeliran pomoću jednačina elastičnog hidrauličkog udara a za njihovo rešavanje korišćena je metoda karakteristika. Gubici na trenje u cjevovodima i betonskom tunelu su računati pomoću kvazistacionarnog i nestacionarnog modela trenja. Pokazano je da za preporučena vremena otvaranja i zatvaranja mlaznica Peltonovih turbina pritisci u sistemu ostaju u dozvoljenim granicama.
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