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UID:0-206@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20220330T133000

DTEND;TZID=Asia/Jerusalem:20220330T143000

DTSTAMP:20230403T112524Z

URL:https://aerospace.technion.ac.il/events/the-role-of-continuous-gust-an
 d-prescribed-motion-on-blade-aerodynamics-and-broadband-noise/

SUMMARY:The role of continuous gust and prescribed motion on blade aerodyna
 mics and broadband noise
DESCRIPTION:Lecturer:Ilya Lesovoy\n Faculty:Department of Aerospace Enginee
 ring\n Institute:Technion – Israel Institute of Technology\n Location:Cl
 assroom 165\, ground floor\, Library\, Aerospace Eng. & https://technion.z
 oom.us/j/96534148664\n Zoom: \n Abstract: \n Details: \n A wide range of d
 evices employ airfoils operating at relatively low chord Reynolds numbers 
 and unsteady flow conditions\, such as UAV’s and wind turbines. The proc
 ess of designing airfoils for those devices relies upon numerical simulati
 ons using both panel codes (XFOIL) and Navier-Stokes solvers (CFD)\, which
  predictions are in fair agreement with the experimental data for thin air
 foils far below aerodynamic stall. Moreover\, those methods lack in predic
 tion of unsteady flows or pitching movement\, which is regarded as a repre
 sentative example of an unsteady flow. When an airfoil passes through unst
 eady flow in pitching motion\, pressure fluctuations are generated on its 
 surface in a way that is not fully verified. To widen the knowledge on aer
 odynamic characteristics on airfoil in pitching motion and unsteady flow\,
  NACA 0018 airfoil was manufactured and tested in closed loop wind tunnel.
  A novel rig design allowed a harmonical pitching motion\, while passive g
 rids generate turbulent flow inside the wind tunnel. A dense chordwise dis
 tribution of pressure taps allowed time-resolved surface pressure measurem
 ents that are used to experimentally investigate aerodynamic forces and ch
 aracteristics of the separation of the flow over the airfoil in comparison
  to static conditions. The experimental setup allows a variation of mean p
 itching angles and amplitudes\, Reynolds numbers and turbulence intensitie
 s.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng. & https://
 technion.zoom.us/j/96534148664

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DTSTART:20220325T030000

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