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SUMMARY:Real flows have corners: Side-wall effects on shock-induced separa
 tion - Prof Holger Babinsky (CUED\, University of Cambridge)
DTSTART:20190614T120000Z
DTEND:20190614T130000Z
UID:TALK123205@talks.cam.ac.uk
CONTACT:Amélie Lamarquette
DESCRIPTION:The interaction of a shock wave with a turbulent boundary laye
 r is one of the fundamental building blocks of high-speed flow. It is part
 icularly important to understand under what circumstances a shock wave cau
 ses flow separation. The most fundamental of all shock/boundary-layer inte
 ractions (SBLIs) is that of a normal shock with a flat plate boundary laye
 r. Here\, it was thought that the primary factor determining the onset of 
 separation is the shock strength (Mach number) with only a mild secondary 
 influence of the incoming boundary layer shape factor. However\, the data 
 gathered over the last 50 years shows a remarkable amount of scatter.\n\nI
 n this talk I will argue that the geometry of the flowfield (in particular
  the confinement caused by the presence of side-walls) may play a signific
 ant role which can explain the scatter seen in the data. Some ideas for th
 e physics of this 'corner effect' will be proposed and the wider implicati
 ons will be discussed. In the second part of this talk I will apply the fi
 ndings from the normal shock interaction case onto the next fundamental SB
 LI flow field\; the supersonic oblique shock reflection. Here again\, I wi
 ll demonstrate that side-wall effects can have considerable impact on the 
 flow field and the onset of separation.
LOCATION:LT6\, Baker Building\, CUED
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