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UID:0-185@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20230116T133000

DTEND;TZID=Asia/Jerusalem:20230116T143000

DTSTAMP:20230103T081414Z

URL:https://aerospace.technion.ac.il/events/two-dimensional-and-three-dime
 nsional-buffet-flows-characterization-and-their-role-in-aeroelastic-instab
 ilities/

SUMMARY:Two-Dimensional and Three-Dimensional Buffet Flows Characterization
  and Their Role in Aeroelastic Instabilities
DESCRIPTION:Lecturer:Lior Poplingher\n Faculty:Department of Aerospace Engi
 neering\n Institute:Technion – Israel Institute of Technology\n Location
 :Classroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: https://t
 echnion.zoom.us/j/98367931661\n Abstract: Shock buffet is an aerodynamic i
 nstability characterized by self-sustained shock oscillations\, which occu
 rs at transonic Mach numbers and moderate angles-of-attack on both airfoil
  (two-dimensional\, 2D) and wing (three-dimensional\, 3D) configurations. 
 The variation of the aerodynamic coefficients degrades handling qualities 
 and aerodynamic performance\, eventually limiting flight envelopes. Furthe
 rmore\, the shock oscillations occur at frequencies close to the natural m
 odes of wings\, thus\, might lead to unstable structural interactions.\nAl
 though many studies were performed on 2D configurations\, the understandin
 g of the fundamental mechanism of the rigid 3D shock buffet and its intera
 ction with elastic wing structures is still limited.  A better understand
 ing of these two issues is essential for structural design of transonic ai
 rcraft and can support the development of control strategies for buffet su
 ppression in realistic flight configurations.\nThe current study presents 
 a computational investigation using Unsteady Reynolds-Averaged Navier-Stok
 es simulations and modal analysis of the shock buffet on 3D configurations
 \, its distinction from 2D shock buffet\, and the fluid-structure interact
 ion between the 3D shock buffet flow and wing elasticity in finite wings.\
 n Details: \n 
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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