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SUMMARY:MechE Seminar: Filling gaps between linear and nonlinear flow mode
 ls and instability controls
DTSTART:20230706T124500
DTEND:20230706T134500
DTSTAMP:20260511T081241Z
UID:1ff69270faf9afa35136eed68880001e14e9b7d8d17c5cb3dae65a90
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Eunok Yim\, GE Renewable Energy Hydropower\nAbstract: Lead
 ing order approximation\, the linear analysis is simple and gives us the d
 ominant characteristics of flow and the instability threshold. However\, i
 t fails as soon as the perturbation amplitude becomes large and the nonlin
 ear effects set in. On the other hand\, fully nonlinear analysis\, direct 
 numerical simulations (DNS)\, experiments and observations can provide acc
 urate results but they can be too complex to reveal the underlying physics
  and are mostly dependent on model by model. My previous academic research
  interests were to develop methods which can link these two analyses and p
 rovide better prediction models by using semi-linear approaches and furthe
 r application to flow control. In this talk\, some examples are shown and 
 possible extensions to hydropower research will be presented.\n\nBiography
 : After receiving her MSc degree in Mechanical Engineering in KAIST\, Sout
 h Korea\, Eunok did her PhD in École Polytechnique in Palaiseau\, France 
 on stability of columnar and pancake vortices in stratified and rotating f
 low. During her postdoc at M2P2\, Aix-Marseille Univ.\, she worked on tran
 sition to turbulence in a rotor-stator cavity. Then\, she worked on semi-l
 inear flow modeling and flow controls at LFMI\, EPFL. Currently\, she is w
 orking on hydro generator CFD and thermal modeling at GE Renewable Energy 
 Hydropower.
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201 https://epfl.zoom.us/j/
 68417720096
STATUS:CONFIRMED
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