BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:A unified description of two-phase geophysical mass movements: ero
 sion\, transportation\, phase-separation and deposition 
DTSTART:20160512T121500
DTEND:20160512T131500
DTSTAMP:20260610T170041Z
UID:3f615c0c7057cef7efbf7823fb52c85799cff677ac6993663ee61d8a
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Shiva Pudasaini\, University of Bonn\nTalk given by prof.
  S. Pudasaini\, Uni. Bonn\, Germany\nErosion\, transportation\, phase-sepa
 ration and deposition processes play critical role in controlling the land
 scape\, its morphodynamics and bedform evolutions in connection to two-pha
 se debris flow and particle transport in mountain slopes\, channels\, vall
 eys and river beds. This results in completely different evolution of aval
 anche and debris-flow fan and morphodynamics.\nHere\, we propose two funda
 mentally new mechanisms. The first is called the separation-flux\, that le
 ads to strong phase-separation in debris flows. This extends the general t
 wo-phase mass flow model (Pudasaini\, 2012) by including a separation-flux
  mechanism that is capable of controlling the dynamically evolving phase-s
 eparation\, sediment sorting and levee formation in a real two-phase\, thr
 ee-dimensional particle-fluid transport.\nSecondly\, we propose a novel\, 
 mechanically consistent\, two-phase\, erosion-entrainment-deposition model
  capable of adequately describing these complex phenomena commonly observe
 d in landslides\, avalanches\, debris flows and bedload transports. This i
 s achieved by enhancing the general two-phase mass flow model by introduci
 ng a two-phase variably saturated erodible basal morphology. The adaptive 
 basal morphology allows for the evolution of erosion-deposition-depths\, i
 ncorporating the inherent physical processes\, evolving basal morphology d
 ue to erosion-channeling-deposition and rheological changes of the flowing
  mixture.\nThe novel enhanced real two-phase model also allows for simulat
 ing fluid-run-off during the deposition process. Our models are validated 
 with some observations of debris-flow and particle transport. So\, the nov
 el\, unified and efficient method can be utilized as a comprehensive model
  for avalanche and debris-flow fan evolution with multiple depositions\, f
 ocusing on the detailed and accurate prediction of debris flow paths and c
 hannels. Potentially\, it can also be applied for the morphodynamics of ri
 vers and deltas\, even during floods and hyperconcentrated flows.\nBio: S
 ince August 2010: Professor (Visiting) at the School of Science\, Kathmand
 u University\, Dhulikhel\, Kavre\, Nepal.\nNovember 2009 - August 2010: Gu
 est Professor of Applied Mathematics\, School of Science and School of Eng
 ineering\, Kathmandu University\, Dhulikhel\, Kavre\, Nepal.\nApril 2007 -
  March 2009: Adjunct Member: a Scientific and Technological Adviser for Co
 llaborative Works on Natural Hazards: University of Natural Resources and 
 Applied Life Sciences\, Department of Civil Engineering and Natural Hazard
 s\, Vienna\, Austria.\nSince August 2006: a Senior Research Scientist at t
 he Department of Geodynamics/Geophysics\, University of Bonn\, Germany.\nJ
 anuary 2006 - July 2006: Research fellow at the Institute and Laboratory o
 f Geotechnics\, Faculty of Civil Engineering and Geodesy\, Darmstadt Unive
 rsity of Technology\, Germany with Prof. R. Katzenbach.\nJanuary 2004 to D
 ecember 2005: Postdoctoral fellow at the Department of Mechanics\, Darmsta
 dt University of Technology\, Germany.\nOctober 2000 - December 2003: PhD 
 student at the Department of Mechanics\, Darmstadt University of Technolog
 y\nAdvisor: Prof. Kolumban Hutter\, PhD/Cornell Uni.\nTopic: Avalanche Dyn
 amics: Mathematical Model\, Experimental Validation and Numerical Simulati
 on for Complicated and Real Topographies.\n2000-2003: Doctor of Natural Sc
 iences in Geophysical Fluid Dynamics from the Department of Mechanics\, Da
 rmstadt University of Technology\, Germany\, with Distinction.\n1998-2000:
  Master of Natural Sciences in Industrial Mathematics from University of K
 aiserslautern\, Germany\, with Very Good.\n1992-1994: Master Degree in Mat
 hematics from T. U.\, Kathmandu\, Nepal\, with First Class.\n1989-1991: Ba
 chelor Degree in Mathematics and Economics from T. U.\, Kathmandu\, Nepal\
 , with First Class.\n1986-1988: Intermediate Degree in Mathematics\, Econo
 mics and Geography from T. U.\, Kathmandu\, Nepal\, with First Class.\nPla
 ce of Origin: Bhadrabas\, Kathmandu\, Nepal.
LOCATION: GC B1 10 http://plan.epfl.ch/?request_locale=fr&room=GC+B1+10&do
 main=places
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR