Numerical simulations of hydraulic transients in PHPP Fužine

U radu su provedene numeričke simulacije hidrauličkih tranzijenata u sustavu crpne hidroelektrane (CHE) Fužine pomoću nestacionarnog 1D modela strujanja pod tlakom u cijevi. Primjenom nekonzervativne formulacije modela nestacionarnog strujanja tekućine u cijevi pod tlakom i fluks-limitirane numeričke metode drugog reda postignuta je zadovoljavajuća točnost modela. Dobiveni numerički rezultati su pokazali dobro slaganje s izmjerenim podacima promatranog sustava.Hydraulic transients in pumping hydroelectric power plant (PHPP) Fužine were simulated with 1D unsteady pipe flow model. High accuracy of the model was accomplished with the use of nonconservative formulation of unsteady pipe flow model incorporating unsteady friction model and second order flux limited numerical scheme. Simulation results show very good agreement between the computed and measured piezometric heads, both in amplitude and frequency of the oscillation