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SUMMARY:Multiphase Hele-Shaw Flows: from Beaches to Dredgers  - Onno Bokho
 ve\, Astro- &amp\; Geophysical Fluid Dynamics\, University of Leeds
DTSTART:20130207T113000Z
DTEND:20130207T123000Z
UID:TALK42326@talks.cam.ac.uk
CONTACT:Catherine Pearson
DESCRIPTION:Liquid-particle and air-particle interactions are investigated
  using a Hele-Shaw cell.  Firstly\, Hele-Shaw experiments with beach and b
 erm formation under driven and breaking waves will be presented. The desig
 n of this Hele-Shaw beach cell is triggered by analysing width- and depth-
 averaged hydrodynamic equations\, such that the minimal gap width necessar
 y for sustained wave breaking can be determined.\nA posteriori\, the desig
 n assumptions were also validated against simulations of sloshing water wa
 ves.  The steady beach morphologies observed will be discussed\, including
  wet and dry beaches\, berm or island formation\, and the emergence of san
 dbanks.\nFinally\, some preliminary experiments and designs will be shown\
 , including aolean\, dry `dune' formation driven by air flow through a non
 uniform channel.\n\n
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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