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UID:0-1197@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20251119T133000

DTEND;TZID=Asia/Jerusalem:20251119T143000

DTSTAMP:20251120T072852Z

URL:https://aerospace.technion.ac.il/events/bubbly-shock-characterization-
 in-aerated-cavitating-flow/

SUMMARY:Bubbly Shock Characterization in Aerated Cavitating Flow
DESCRIPTION:Lecturer:Elad Zur\n Faculty:The Stephen B. Klein Faculty of Aer
 ospace Engineering\n Institute:Technion – Israel Institute of Technology
 \n Location:Classroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom
 : https://technion.zoom.us/j/93549691766\n Abstract: The complex coupled i
 nteractions between non-spherical bubbles in cavitation clouds and bubbly 
 shocks present significant challenges for experimental measurements and hi
 gh-fidelity simulations. Capturing these interactions requires an experime
 ntal setup with optical access and advanced data-processing capabilities f
 or simultaneous monitoring of bubbly shocks and bubble dynamics. This stud
 y addresses these challenges by constructing a dedicated experimental setu
 p for aerated cavitating flows in a generic converging-diverging (CD) nozz
 le and utilizing computer vision (CV) tools coupled with the enhanced grad
 ient shadowgraphy technique for bubbly shock detection and tracking. Our s
 etup enables the collection of high-speed imaging and high-frequency unste
 ady pressure measurements to study cavitation phenomena in various liquids
  and controlled void fractions. We demonstrate the application of our code
  for the characterization of bubbly shock waves in aerated cavitating flow
 s in a CD nozzle for different flow liquids\, including distilled water\, 
 dodecane (aviation fuel surrogate)\, and aviation fuel liquids. Using our 
 experimental setup and our processing code for the high-speed imaging\, un
 precedented quantitative data are obtained on the collapse of attached cav
 ity clouds in the diverging section of the nozzle at the throat exit\; the
  spatio-temporal evolution of bubbly shock waves\, emitted from these clou
 ds\; and on bubbly shock morphology during their interaction with shed vor
 tical cavities. In the seminar\, a detailed discussion on the differences 
 in cavitation behavior between distilled water and dodecane will be presen
 ted\, contributing valuable information toward the development of improved
  models for predicting and controlling cavitation in various internal flow
  systems.\n Details: \n 
CATEGORIES:Seminars,סמינרים
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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TZID:Asia/Jerusalem

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DTSTART:20251026T010000

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