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SUMMARY:ENAC Seminar Series by Dr D. Muriel
DTSTART:20190716T090000
DTEND:20190716T100000
DTSTAMP:20260527T163428Z
UID:7fac22ec36853534d7c20c56654e2d849847f42b039a948ddc827716
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Diego Muriel\n09:00 – 10:00 – Dr Diego Muriel\nPostdoct
 oral Fellow\, Johns Hopkins University\, USA\n\nHydro-Kinetic Energy Harve
 sting Through Flexible Materials and Wave-Like Analogs\n\nThe implementati
 on of flexible materials for micro-energy harvesting is limited by the req
 uired high flow velocities to start exploitable oscillations. Initial conf
 igurations consist of membranes or plates with minimal or no induced curva
 ture. Upon the action of an external flow\, the harvester will oscillate p
 resenting attractive possibilities for energy extraction\, but nevertheles
 s inefficient. In this presentation\, I will demonstrate that forcing a pl
 ate into a wave-like deformation reduces minimum required flow velocities 
 and provides consistent large amplitude oscillatory motions\, therefore im
 proving the harvester performance.\n \nFirst\, I will present the capacit
 y to extract energy through a self-powered water pump\, and second\, I wil
 l introduce a reduced-order model to explore the underlying physics based 
 on experimental and analytical methods. I will show that the main driving 
 mechanisms are a marginally stable deformation\, a destabilizing effect of
  the compressive force\, and an unsteady flow field that exists prior to t
 he onset of large amplitude oscillatory motions. These results open possib
 ilities for new configurations of energy harvesters\, and show that the ph
 ysical concepts of this application can be translated to areas such as loc
 omotion and propulsion.\n 
LOCATION:CM 1 4 https://plan.epfl.ch/?room==CM%201%204
STATUS:CONFIRMED
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