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CATEGORIES:Engineering Fluids Group Seminar
SUMMARY:Bio-inspired aerofoil adaptations for the reductio
 n of turbulence interaction noise - Dr Lorna Ayton
  (DAMTP)
DTSTART;TZID=Europe/London:20190503T130000
DTEND;TZID=Europe/London:20190503T140000
UID:TALK123304AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/123304
DESCRIPTION:A dominant source of broadband aeroengine noise ar
 ises when the unsteady wakes shed from rotors inte
 ract with downstream stators. This so-called leadi
 ng-edge noise cannot be eliminated\, but it can be
  reduced. By altering the spanwise geometry of the
  leading edge of an aerofoil it is known through e
 xperimental testing that leading-edge noise can be
  significantly reduced over broadband frequencies.
  In recent years\, a multitude of different shapes
  have been tested and all are seen to have benefit
 s for different frequency ranges\, which may be id
 eal for the reduction of tonal noise\, but the que
 stion remains\; which design is optimal for broadb
 and noise reduction?\n\nThis talk presents a theor
 etical model for leading-edge noise\, both for str
 aight edges and serrated edges. Through theoretica
 l optimisation\, a set of rules are proposed which
  lead to an optimal design for broadband leading-e
 dge noise reduction. Experimental data on sample n
 ew designs validates the theoretical predictions a
 nd illustrates up to an additional 7dB noise reduc
 tion verses conventional serrated designs.
LOCATION:JDB Seminar Room\, CUED
CONTACT:Joseph Ibrahim
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