Numerical simulations of hydraulic transients in hydropower plant Jajce II

Authors

  • 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

Keywords:

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

Abstract

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.  

Author Biographies

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

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Published

2013-02-19

Issue

Engineering Review, Vol. 33, No. 1

Section

Articles

License

Copyright 2022 by Faculty of Engineering University of Rijeka, Faculty of Civil Engineering University of Rijeka. All rights reserved. This material may not be reproduced or copied, in whole or in part, in any printed, mechanical, electronic, film, or other distribution and storage media without the written consent of the publisher.

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