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UID:0-375@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20180625T120000

DTEND;TZID=Asia/Jerusalem:20180625T130000

DTSTAMP:20230527T140317Z

URL:https://aerospace.technion.ac.il/events/the-2018-phd-seminar-in-memory
 -of-prof-shmuel-and-mrs-noemi-merhav-silence-is-golden/

SUMMARY:The 2018 PhD Seminar in Memory of Prof. Shmuel and Mrs. Noemi Merha
 v - "Silence is Golden"
DESCRIPTION:Lecturer:Shimon Julius\n Faculty:Department of Aerospace Engine
 ering\n Institute:Technion – Israel Institute of Technology\n Location:C
 lassroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstract
 : \n Details: \n In this talk\, we will explore the concept and physics of
  Thermphone sound production. Thermophone transducers produce sound by est
 ablishing a periodic heat flux into a fluid medium. This heat flux signal 
 engenders a corresponding periodic local pressure rise\, in a physically s
 tatic process.\nPressure field stimulation and sound production via Joule 
 heating has been studied since the late 19th century\, though modern capab
 ilities in material science have recently thrust the technology anew into 
 the spotlight due to dramatic improvements in potential device efficiency.
  Furthermore\, it has become apparent that though the physics of sound pro
 duction and propagation is well understood\, the heat transfer mechanisms 
 within the transducers themselves is not well understood. At the temporal 
 and length scales inherent to the operation of these devices\, we have unc
 overed evidence of non-Fourier heat conduction phenomena\, such as ballist
 ic and wavelike energy transport processes.\nAs well as a discussion of th
 e theoretical aspects thermophone sound generation\, we demonstrate our re
 search into a novel type of sound cancellation approach that takes advanta
 ge of the unique properties of thermophone transducers to perform sound ca
 ncellation on the source boundary itself. Finally\, we will touch on the i
 mplications of this technology for the aerospace industry.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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