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SUMMARY:Aerodynamic noise generation due to the scattering of jet instabil
 ity waves - Dr Benshuai Lyu\, DAMTP
DTSTART:20200214T130000Z
DTEND:20200214T140000Z
UID:TALK138712@talks.cam.ac.uk
CONTACT:Connor O'Pray
DESCRIPTION:Jet noise\, at the very heart of aeroacoustics\, has been the 
 dominant component of aircraft noise for decades. The reduction of jet noi
 se has been heavily relying on increasing the bypass ratio of aero-engines
 . The increase of the bypass ratio\, and hence the engine diameter\, have 
 led to a close coupling between the engine and the aircraft wings.\n\nThis
  close coupling however creates a new problem: jet noise is enhanced signi
 ficantly at low frequencies by the wing. This modified jet noise is common
 ly referred to as installed jet noise. In this talk\, I will summarize som
 e of the recent work that I have done during my PhD at CUED. This includes
  a low-order model of the installed jet noise\, some experimental studies\
 , and if it time allows\, some noise reduction strategies. More importantl
 y\, the newly discovered physical mechanism for such a noise intensificati
 on will be highlighted.\n
LOCATION:LR5\, CUED.
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