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UID:0-485@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20160615T163000

DTEND;TZID=Asia/Jerusalem:20160615T173000

DTSTAMP:20230603T191716Z

URL:https://aerospace.technion.ac.il/events/transition-to-turbulence-in-wa
 ll-bounded-shear-flows/

SUMMARY:Transition to Turbulence in Wall-Bounded Shear Flows
DESCRIPTION:Lecturer:Michael Karp\n Faculty:Department of Aerospace Enginee
 ring\n Institute:Technion – Israel Institute of Technology\n Location:Cl
 assroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstract:
  \n Details: \n Albeit great advancement\, transition to turbulence contin
 ues to be an intriguing subject\, challenging many researchers worldwide. 
 The current research covers several aspects of transition - The evolution 
 of coherent structures\, such as counter-rotating vortex pairs and hairpin
 s\, observed in various transitional as well as turbulent flows is studied
  using a novel analytical-based numerical method for the evolution of loca
 lized disturbances in homogenous shear base-flows. A minimal element model
  capable of following the evolution of packets of hairpins is developed an
 d compared successfully with experiments. Finally\, an analytical model fo
 r transition via secondary instability of counter-rotating vortices in cha
 nnel flow is presented. The model utilizes separation of scales between th
 e slowly evolving base-flow and the rapidly evolving secondary disturbance
  to capture most transition stages using the multiple time scales method a
 nd its predictions are verified by comparison with direct numerical simula
 tions.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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DTSTART:20160325T030000

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