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SUMMARY:What lies beneath? Surface-subsurface interactions in fluvial and 
 coastal environments
DTSTART:20160602T160000
DTEND:20160602T170000
DTSTAMP:20260503T205023Z
UID:a1b08b368cf6dd97141e6233ececda963b3657e3d65f152237289df2
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dubravka Pokrajac\, Aberdeen University\nBio: Dubravka studied
  Civil Engineering at University of Belgrade\,  Belgrade\, Yugoslavia whe
 re she obtained a  BSc (Honours) degree with major in Hydraulic Engineeri
 ng in 1982\, and MSc in Hydraulic Engineering in 1987. She did  her  PhD
   on  modelling  groundwater  flow  and  transport  at  the  same
   university.  Dubravka  worked  at  the University of Belgrade befor
 e joining the lecturing staff of Aberdeen University Engineering Departmen
 t in 1998 as a  lecturer.  She  was  promoted  to  Senior  Lecturer
   in  2005  and  Professor  in  2014. \nBesides  the  topic  of
   the seminar\, which has been central to Dubravka’s research over the 
 past 15 years\, her research interests include double - averaging  method
 ology\,  porous  medi a  flows  and  unsteady  turbulent  flows  o
 ver  rough  walls.  She  has attracted external funding of around £2.
 6m (~£1.4m as the PI) from the EPSRC\, Oil & Gas Academy of Scotland\, Pr
 oof of Concept\, UNESCO\, and NERC.  Dubravka has supervised 17 PhD stude
 nts (11 gra duated so far) and authored or co - authored over 100 journal 
 and conference papers. She regularly reviews manuscripts for over 15 inter
 national  journals\,  and  serves  as  an  Associate  editor  for
   AGU  journals  Water  Resources  Research  and Hydrological Proces
 ses.\nTurbulent boundary layer flow in the natural environment commonly oc
 curs over permeable layers such as river beds and coastal beaches. The flu
 ids within these permeable layers exchange mass\, momentum and any dissolv
 ed or suspended substance with the surface flow. These exchange processes\
 , collectively called surface-subsurface interactions\, affect flow and th
 erefore sediment transport close to the bed. The details of the complex me
 chanisms of surface-subsurface interactions are not yet fully understood\,
  primarily due to the difficulties in measuring flow velocities within the
  permeable materials. However\, in the past couple of decades non-intrusiv
 e experimental technologies such as Particle Image Velocimetry and Laser-I
 nduced Fluorescence have made it possible to measure the detailed flow fie
 ld above and within porous materials that are exposed to turbulent flow ov
 er their surface. This seminar presents the theoretical background and a s
 eries of experimental and numerical results which clarify the role of surf
 ace-subsurface interactions in the fluvial and coastal environment.The con
 ference will be given in English. Duration is of approximately 30 minutes 
 followed by discussion.
LOCATION:GC B1 10 http://plan.epfl.ch/?zoom=20&recenter_y=5864230.48622&re
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STATUS:CONFIRMED
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