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SUMMARY:THE ROLE OF SURFACE ROUGHNESS AND AMBIENT FLUID IN THE RUN-OUT OF 
 FINE GRANULAR FLOWS.
DTSTART:20180608T110000
DTEND:20180608T120000
DTSTAMP:20260917T070553Z
UID:c19dcd4d22ac655c6d945b99bdd462d4bb0ea7df02cb0fab43bb1387
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Santiago Montserrat\, Civil Engineer (U. of Chile)\, Ph.D.
  (U. of Chile). Currently is Associated Researcher at the Advanced Mining 
 Technology Center (AMTC)\, Universidad de Chile. His research focuses on g
 ranular flows mechanics\, sediment transport and modeling. His group mainl
 y investigates about hydrological processes affecting the mining industry 
 in mountain environments\, from a perspective of water resources\, water q
 uality quality and extreme events\nGeophysical granular flows – such as 
 debris flows\, snow avalanches and pyroclastic flows – may cause substan
 tial economic loss and fatalities. Different approaches have attempted mod
 eling the motion of granular flows\, still without capturing completely th
 e vast and rich phenomena. In particular\, energy losses resulting from fl
 uid and particle interactions are still not well represented in applied gr
 anular models. The interstitial fluid appears as a key factor modulating e
 nergy loses by conferring high mobility to granular flows. Tied to the lat
 ter\, pore fluid pressure can reduce particle frictional stress by local b
 uoyant effects enhancing run-out distances and flow velocity. In this talk
  experimental results are reported on the run-out of fine particle granula
 r flows\, with emphasis in the effects of the initial pore fluid pressure\
 , initial mixture density and bottom roughness in flow mobility.\n 
LOCATION:GC A1 416 https://plan.epfl.ch/?room=GCA1416
STATUS:CONFIRMED
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