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SUMMARY:Transport in heterogeneous porous formations: The role of advectio
 n
DTSTART:20130226T161500
DTEND:20130226T171500
DTSTAMP:20260407T105654Z
UID:240cc121bedbfee8f64e7ad6a5a073aec2e2ba70478591169c83c7d6
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Aldo Fiori\, Dipartimento di Scienze dell'Ingegneria Civile
 \, Università di Roma Tre\nTransport of a nonreactive solute in natural a
 quifer is deeply influenced by the spatial distribution of the hydraulic c
 onductivity K. Recent studies and experimental evidence show that the dyna
 mics of transport is affected by the degree of heterogeneity present in th
 e groundwater system\, and in particular when in presence of strongly hete
 rogeneous aquifers. A few features of transport in such formations are dis
 cussed by the means of a simplified theoretical model which is based on th
 e self-consistent assumption. The theoretical model\, which depends only o
 n the statistical properties of K and the mean uniform flow U\, is tested 
 against numerical simulations and laboratory and field experiments. The de
 rived solution permits to test and discuss a series of transport features 
 which occur in strongly heterogeneous aquifers\, like e.g. connectivity an
 d fast preferential flow or solute retention and tailing. The method is ap
 plied to the MADE experiment (Columbus\, USA) and results are discussed. I
 t is claimed that local scale advection may explain many of the transport 
 features occurring in disordered porous media.
LOCATION:GR A3 32 http://plan.epfl.ch/?room=GR%20A3%2032
STATUS:CONFIRMED
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