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Fluid-structure interaction in a pump-as-turbine operating at part load


Dahal, P and Henderson, A and Wang, X and Giosio, D, Fluid-structure interaction in a pump-as-turbine operating at part load, Proceedings of the 20th International Seminar on Hydropower Plants, 14-16 November 2018, Vienna, Austria, pp. 721-728. (2018) [Refereed Conference Paper]

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Copyright 2018 Institute for Energy Systems and Thermodynamics


Hydro turbines are increasingly required to operate outside their best efficiency point (BEP) in order to meet network demand. Such operation affects turbine efficiency and decreases asset life. This study examines the fluid structural interaction (FSI) inside a pump as turbine (PAT) operating at BEP and low load. The simulation results of low load operation shows recirculating flow in the blade passages and an unstable vortex below the runner. From the FSI analysis, peak stress levels on the turbine between the band and blade were found to be 6.8 times higher at low load than at BEP operation.

Item Details

Item Type:Refereed Conference Paper
Keywords:CFD, hyrdo turbine, part load
Research Division:Engineering
Research Group:Mechanical engineering
Research Field:Energy generation, conversion and storage (excl. chemical and electrical)
Objective Division:Energy
Objective Group:Renewable energy
Objective Field:Hydro-electric energy
UTAS Author:Dahal, P (Mr Prakash Dahal)
UTAS Author:Henderson, A (Associate Professor Alan Henderson)
UTAS Author:Wang, X (Professor Xiaolin Wang)
UTAS Author:Giosio, D (Dr Dean Giosio)
ID Code:130368
Year Published:2018
Deposited By:Engineering
Deposited On:2019-01-22
Last Modified:2019-10-23
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