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SUMMARY:MechE Colloquium: On Vortex-Induced Vibrations and their Mitigatio
 n
DTSTART:20251028T120000
DTEND:20251028T130000
DTSTAMP:20260916T235732Z
UID:d9da90bdd24cef461f06ecca0423812fd4a32f95608bd88abb91ad93
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Mohamed Farhat\, Senior Scientist SGM\, IGM\, EPFL\nAbst
 ract: Vortex-Induced Vibrations (VIV) arise from the unsteady fluid force
 s generated by periodic vortex shedding in the wake of a bluff body. When 
 the vortex-shedding frequency approaches a structural natural frequency\, 
 resonance and lock-in may occur\, leading to significant oscillations and 
 even structural damage. Such flow–structure interactions are encountered
  in a wide range of applications\, from offshore risers and tall buildings
  to airplane wings\, hydraulic turbines\, pumps\, and marine propellers.\n
 In our Laboratory\, VIV has been investigated for a long time\, with subst
 antial progress achieved in understanding fluid–structure coupling mecha
 nisms and developing effective mitigation strategies. Building on this leg
 acy\, our recent work has explored innovative flow-control concepts based 
 on Gyroid-inspired trailing-edge geometries\, which have demonstrated a re
 markable ability to suppress the lock-in phenomenon in the case of an isol
 ated hydrofoil in water stream. The combination of porosity and tortuosity
  inherent to the Gyroid structure appears to play a key role in preventing
  the formation of alternate vortices. The seminar will summarize key findi
 ngs from this long-term research effort and highlight this recent advancem
 ent in VIV mitigation.\n\n\nBiography: M. Farhat earned his Master's degr
 ee in Hydraulic Engineering from the INPG (France) and completed his PhD a
 t EPFL (Switzerland). In 1995\, he joined Hydro-Québec’s R&D department
  in Montréal\, Canada\, where he led numerous research projects related t
 o hydro and nuclear power plants. Since 2001\, he has been a Senior Scient
 ist\, Lecturer\, and Head of the Cavitation Research Group at EPFL.\nHis r
 esearch combines a fundamental approach with cutting-edge experimentation 
 to address practical challenges across hydropower\, marine propulsion\, he
 althcare\, and water management sectors. His main research interests inclu
 de cavitation dynamics\, flow-induced vibrations\, hemodynamic\, micrograv
 ity experiments and orbital sloshing\, with a particular emphasis on under
 standing and controlling unsteady flow phenomena in complex fluid systems.
  M. Farhat has authored more than 130 papers in leading scientific journal
 s and has delivered over 100 invited and keynote lectures at international
  conferences and in industrial settings. He has also served as an expert a
 nd consultant for numerous companies in the hydropower and energy sectors.
LOCATION:CM 1 4 https://plan.epfl.ch/?room==CM%201%204 https://epfl.zoom.u
 s/j/61360740951
STATUS:CONFIRMED
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