Transient Phenomena in Hydraulic Turbomachinery
A special issue of Fluids (ISSN 2311-5521).
Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 419
Special Issue Editor
Interests: CFD; turbomachinery; rotating stall; modal decomposition
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Power stations expanding solar and wind energy resources deliver electricity intermittently into the grid. Hydropower plants play an essential role in stabilizing these supply fluctuations undergoing frequent load variations, emergency shut-downs and restarts, and off-design operation. Hence, hydraulic turbomachinery is operated over various operating conditions, while diverse, complex flow patterns and instabilities occur. The induced low- and high-frequency pressure fluctuations cause fatigue and threaten the lifetime of the turbomachinery components. A better understanding of the flow instabilities generated during transient operating conditions would improve hydraulic turbomachinery design strategies. Thereby, energy from intermittent resources could be incorporated into the electric network more efficiently.
This Special Issue aims to be a forum for recent developments in theory, state-of-the-art experiments, modelling, and computations on the analysis of transient flow behaviours in hydraulic turbomachinery.
Dr. Bernhard Semlitsch
Guest Editor
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Keywords
- stall
- fatigue
- vortex shedding
- rotating vortex rope
- pressure fluctuations
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