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Numerical simulations of hydraulic transients in hydropower plant Jajce II

Jerko Škifić ; Faculty of Engineering, University of Rijeka
Adrijana Radošević ; Seting Inženjering d.o.o.
Đani Brajković ; Mardesign d.o.o.
Siniša Družeta ; Faculty of Engineering, University of Rijeka
Marko Čavrak ; Faculty of Engineering, University of Rijeka


Puni tekst: engleski PDF 250 Kb

str. 51-56

preuzimanja: 714

citiraj


Sažetak

Hydraulic transients in hydropower plant Jajce II (Bosnia and Herzegovina) were simulated with 1D unsteady pipe flow model. High accuracy of the model was accomplished with the use of non-conservative formulation of an unsteady pipe flow model incorporating a modified instantaneous acceleration-based unsteady friction model and second order flux limited numerical scheme. In order to apply the model, complex dual surge tank geometry needed to be represented with a unified surge tank. The numerical model was validated against the measured data on three simulation scenarios, defined with different turbine discharge reductions. Simulation results show a very good agreement between the computed and measured piezometric heads, both in amplitude and frequency of the oscillation.

Ključne riječi

hydropower plant, hydraulic transients, unsteady pipe flow, unsteady friction, surge tank

Hrčak ID:

97689

URI

https://hrcak.srce.hr/97689

Posjeta: 1.061 *