Mechanistic modeling of different types of surge tanks and draft tubes for hydropower plants

Madhusudhan Pandey
TMCC, University of South-Eastern Norway

Bernt Lie
TMCC, University of South-Eastern Norway

Ladda ner artikelhttps://doi.org/10.3384/ecp20176131

Ingår i: Proceedings of The 61st SIMS Conference on Simulation and Modelling SIMS 2020, September 22-24, Virtual Conference, Finland

Linköping Electronic Conference Proceedings 176:18, s. 131-138

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Publicerad: 2021-03-03

ISBN: 978-91-7929-731-2

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


OpenHPL is an open-source hydropower library consisting of models for hydropower components that are developed based on mass and 1D momentum balance. It consists of mechanistic models for the flow of water in filled pipes (inelastic and elastic walls, incompressible and compressible water), a mechanistic model of a Francis turbine (including design of turbine parameters), friction models, etc. This paper includes an extension of OpenHPL with mechanistic models of different types of surge tanks (sharp orifice type, throttle valve surge tank, air-cushion surge tank) and draft tubes (conical diffusers and Moody spreading pipes). The simulated response of the models is presented using a case study of real hydro power plants.


surge tanks, draft tubes, air-cushion surge tank, throttle valve surge tank, conical diffuser, Moody spreading pipes


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