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VERSION:2.0
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SUMMARY:Virtual MEchanics GAthering -MEGA- Seminar: Rotation of inertial p
 articles in homogenous isotropic turbulence
DTSTART:20201022T161500
DTEND:20201022T173000
DTSTAMP:20260510T204939Z
UID:5e1829355c39c2c5719f55095d051b73116e9467e54b3d181d27346c
CATEGORIES:Conferences - Seminars
DESCRIPTION:Ankur Bordoloi\, Environmental Fluid Mechanics\, UNIL\nRotatio
 n of inertial particles in homogenous isotropic turbulence\, by Ankur Bor
 doloi\, Environmental Fluid Mechanics\, UNIL\n\nThe physics of motion of d
 ispersed particles in turbulent flow is of importance to many natural and 
 industrial processes\, such as aquatic ecology\, sediment transport\, wate
 r treatment\, and paper making. The dispersed matter in these processes oc
 cupies a wide space in the size spectrum\, varying from sub-Kolmogorov sca
 le to sizes greater than the largest scales of turbulence. The shape of pa
 rticles in these suspensions also varies greatly\, and few have the oft-as
 sumed simplicity of spheres. The kinematics of small (sub-Kolmogorov) sphe
 rical particles in turbulence are relatively well understood. Of interest 
 to this research is the rotational dynamics of non-spherical particles tha
 t are larger than the Kolmogorov length. Through various experiments\, we 
 measure the spinning and tumbling motions of long cylindrical particles (i
 .e. length/diameter ³1). Contrary to popular assumptions based on K41 the
 ory\, the spinning rates of these particles are larger than the tumbling r
 ate. These results indicate that these large particles may preferentially 
 align with the large structures of turbulence.\n\nDr. Ankur Bordoloi obtai
 ned his PhD (2014) in Aerospace Engineering & Mechanics from the Universit
 y of Minnesota. He is currently a postdoc in the Institute of Earth Scienc
 es at UNIL. Prior to his current position\, Ankur has done postdocs at Uni
 versity of California\, Berkeley and the Los Alamos National laboratory. O
 ver his academic and research career\, Ankur has worked on several problem
 s related to multiphase flows (droplet dynamics\, particle-turbulence inte
 ractions\, particle-shock wave interactions\, plume sedimentation etc.) th
 at have applications in geophysical flows\, marine biology\, environmental
  science\, biomedical design\, and aerospace engineering.\n\nFor more info
 rmation: about his research: https://www.adbordoloi.com/research/
LOCATION:Zoom: epfl.zoom.us/s/98393329833 Room Passcode: 349948 http://epf
 l.zoom.us/s/98393329833
STATUS:CONFIRMED
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