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SUMMARY:MechE Colloquium: Fatigue modelling and mitigation in hydraulic ma
 chines
DTSTART:20241001T120000
DTEND:20241001T130000
DTSTAMP:20260415T184035Z
UID:ee02fe3cdc28ab6cd810af6c92b018662e7915c85751c62d64d569fb
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Elena Vagnoni\, Hydraulic Machines Platform\, EPFL\nAbstra
 ct: The growing demand for increased flexibility in modern power systems p
 oses a significant challenge to the safe operation of the hydropower asset
 . Extended operating ranges and frequent start-ups and stops\, necessary t
 o regulate the power grid\, lead to performance degradation and reduce the
  lifespan of the hydraulic machines. As a consequence\, new technologies a
 nd strategies for operational control and monitoring are needed to improve
  hydraulic machines reliability and longevity. This talk presents our rece
 nt findings on the understanding and modelling of the fatigue-induced dama
 ge and the underlying fluid-structure interactions causing the premature a
 ging of the hydraulic machine runner blades during start-up procedures. Ex
 perimental investigations using strain gauges measurements and particle im
 age velocimetry on reduced-scale models help develop predictive models con
 sidering the full operating range of the machine\, offering a breakthrough
  for the optimization of the start-up sequences to minimize the fatigue-in
 duced damage.\n\nBiography: Dr. Elena Vagnoni is currently the head of the
  research projects group at EPFL Technology Platform for Hydraulic Machine
 s and lecturer for the EPFL Mechanical Engineering Section. Her research i
 nterests focus on the experimental investigation and predictive modelling 
 of flow phenomena and fluid-structure interactions in hydraulic machines t
 o improve hydropower exploitation.\n\nShe graduated with honours in Mechan
 ical Engineering from the Politecnico of Milan (Italy) in 2013\, and she o
 btained her Ph.D. in Mechanics at EPFL in 2018. Before her current positio
 n\, she was a research assistant fellow at Johns Hopkins University (US)\,
  a postdoctoral researcher at EPFL\, and a SNSF-fellow guest scientist at 
 NTNU (Norway). She is the Swiss expert for the Annex IX of the Internation
 al Energy Agency (IEA) Hydropower Technology Cooperation Programme and Vic
 e-Coordinator of the European Energy Research Association (EERA) joint pro
 gram Hydropower.
LOCATION:BM 5202 https://plan.epfl.ch/?room==BM%205202 https://epfl.zoom.u
 s/j/64267570786
STATUS:CONFIRMED
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