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TZID:Europe/Vienna
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DTSTART:20200329T030000
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DTSTART:20191027T020000
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DTSTAMP:20260404T015809Z
UID:5e4a7d492cd87748722931@ist.ac.at
DTSTART:20200219T100000
DTEND:20200219T110000
DESCRIPTION:Speaker: Sina Ghaemi\nhosted by Björn Hof\nAbstract: The combi
 nation of a no-slip boundary condition and a high fluid momentum forms an 
 important flow category known as wall-bounded turbulent flows. Turbulent w
 all-bounded flows are known to generate large skin-friction drag\, resist 
 flow separation\, and efficiently transport a laden phase. To understand t
 he physics of turbulent wall flows\, we carried out experimental investiga
 tions that characterize the response of turbulent wall flows to a variety 
 of manipulations. I will discuss how changes in (a) the boundary condition
 \, (b) fluid properties\, (c) adverse pressure gradient\, and (d) the pres
 ence of a laden phase affect wall-bounded turbulent flows. The boundary co
 ndition is varied using superhydrophobic surfaces\, while the fluid proper
 ties are modified using a variety of water-soluble drag-reducing additives
 . An airfoil is used to apply an adverse pressure gradient and investigate
  the coherent motion of a turbulent boundary layer during an intermittent 
 flow separation process. The final part of this talk touches upon the moti
 on of large particles suspended in a turbulent channel flow.
LOCATION:Meeting room 2nd floor / Office Bldg West (I21.01.132)\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Sina Ghaemi: Physics and Control of Wall-Bounded Turbulent Flows
URL:https://talks-calendar.ista.ac.at/events/2658
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