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SUMMARY:A new wave-to-wire wave-energy model: from variational principle t
 o compatible space-time discretisation - Onno Bokhove (University of Leeds
 )
DTSTART:20190724T140000Z
DTEND:20190724T150000Z
UID:TALK127621@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Amplification phenomena in a so-called bore-soliton-splash hav
 e led us to develop a novel wave-energy device with wave amplification in 
 a contraction used to enhance wave-activated buoy motion and magnetically-
 induced energy generation.  An experimental proof-of-principle shows that 
 our wave-energy device works.  Most importantly\, we develop a novel wave-
 to-wire mathematical model of the combined wave hydrodynamics\, wave-activ
 ated buoy motion and electric power generation by magnetic induction\, fro
 m first principles\, satisfying one grand variational principle in its con
 servative limit.  Wave and buoy dynamics are coupled via a Lagrange multip
 lier\, which boundary value at the waterline is subtly solved explicitly b
 y imposing incompressibility in a weak sense.  Dissipative features\, such
  as electrical wire resistance and nonlinear LED-loads\, are added a poste
 riori.  New is also the intricate and compatible (finite-element) space-ti
 me discretisation of the linearised dynamics\, guaranteeing numerical stab
 ility and the correct energy transfer between the three subsystems.  Preli
 minary simulations of our simplified and linearised wave-energy model are 
 encouraging\, yet suboptimal\, and involve a first study of the resonant b
 ehaviour and parameter dependence of the device.  <br><br><br><br>
LOCATION:Seminar Room 1\, Newton Institute
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