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VERSION:2.0
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SUMMARY:EESS talk on "Newton's Shear Flow Approach to Infiltration and Dra
 inage"
DTSTART:20191022T121500
DTEND:20191022T130000
DTSTAMP:20260427T212153Z
UID:40f6299448088bf35250e673949aae09fe4647d01b7af3c45ca4aa82
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Peter Germann\, professor emeritus\, Institute of Geography
 \, UniBE. After his first degree in Forest Engineering from the ETH-Z in 1
 969\, he earned in 1976 my PhD in Soil Physics with Prof. F. Richard\, For
 estry Department at the ETH-Z with the dissertation on Water Balance and E
 lectrolyte Transport in a Forest- and Grassland-Ecosystem. From 1976 to 19
 80 he was a Research Associate in Hydrology at the VAW/ETH-Z investigating
  soil hydrology in the Rietholzbach Catchment (Leader: Prof. H. Lang). In 
 1980\, he spent a Post-Doc study year at the Institute of Hydrology\, Wall
 ingford (UK) that initiated research on macropore flow. From 1980 to 1986\
 , he served as Assistant Professor in Hydrology at the Department of Envir
 onmental Sciences at the University of Virginia in Charlottesville (USA). 
 From 1986 to 1989\, P. Germann was Associate Professor of Soil Physics wit
 h the Soils and Crops Department\, Cooks College of Agriculture\, New Brun
 swick Campus of Rutgers The State University of New Jersey (USA). In 1989\
 , he became the first Professor in Soil Science at the Institute of Geogra
 phy at the University of Bern\, from where he retired in 2009.\nAbstract:\
 nInfiltration is considered a water shock that initiates a water content w
 ave (WCW) moving across a permeable medium. Gravity is the only driving fo
 rce that is balanced by viscosity\, while atmospheric pressure prevails in
  the WCW. Following Newton's law of shear\, the two parameters film thickn
 ess and specific contact area of the WCW per unit volume of the permeable 
 medium suffice to quantify infiltration and drainage. The specific contact
  area is the locus of momentum\, energy\, heat\, water\, solute\, and part
 icle exchanges between the WCW and the sessile parts of the medium. The ap
 proach extends Darcy's (1856) law into partially water-saturated permeable
  media. It belongs to the family of Newton's shear flow that includes flow
 s according to Hagen-Poiseuille (1846)\, Darcy (1856)\, and Dupuit (1865)-
 Forchheimer in saturated media. The basics are briefly introduced and exam
 ples from experiments illustrate the various aspects of Newton's shear flo
 w in permeable media.
LOCATION:GR C0 01 https://plan.epfl.ch/?room==GR%20C0%2001
STATUS:CONFIRMED
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