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SUMMARY:Graded arrays for spatial frequency separation and amplification o
 f water waves - Malte Peter (Universität Augsburg)
DTSTART:20230522T132500Z
DTEND:20230522T141000Z
UID:TALK198895@talks.cam.ac.uk
DESCRIPTION:Wave-energy converters extracting energy from ocean waves are 
 known to suffer from poor efficiency. We propose structures capable of sub
 stantially amplifying water waves over a broad range of frequencies at sel
 ected locations\, with the idea of enhanced energy extraction. The structu
 res consist of full or C-shaped bottom-mounted cylinders arranged in one-d
 imensional or two-dimensional arrays\, with the cylinder properties or the
  array spacing graded along the array. Using linear potential-flow theory\
 , it is shown that the energy carried by a plane incident wave is amplifie
 d within specified locations\, for wavelengths comparable to the array len
 gth\, and for a range of incident directions. Transfer-matrix analysis is 
 used to analyse the large amplifications and we also show results from rec
 ent wave-flume experiments confirming the amplification phenomenon in prat
 ice.
LOCATION:Seminar Room 1\, Newton Institute
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