HR: 0830h
AN: H21D-0853    [PDF]
TI: Laboratory Measurement of Dispersion in a Saturated Two-Dimensional Flow Field.
AU: * Sternberg, S P
EM: ssternbe@d.umn.edu
AF: University of Minnesota Dulth, Department of Chemical Engineering 10 University Drive, Duluth, MN 558122496
AB: Laboratory experiments show the effect of a single large heterogeneity in a two-dimensional flow field. Potassium Chloride (KCl), a conservative tracer, was used to examine the effect of the heterogeneity on miscible dispersion. The porous medium is created using two different distributions of spherical glass beads packed inside a 32 x 32 x 1 cm box. The heterogeneity is a 16 x 16 cm inclusion within the box - forming two distinct regions. The box is initially saturated with 0.02 M KCl and is displaced with 0.2 M KCl during the experiment. The changing chloride concentrations are measured at 256 locations within the box, every 0.75 seconds, with total experimental times up to 9000 seconds (depending on the flow rate). The experimental measurements clearly show the flow paths, tracer travel times, and positional breakthrough curves of the tracer.
DE: 1829 Groundwater hydrology
DE: 1832 Groundwater transport
SC: Hydrology [H]
MN: 2003 Fall Meeting