Author(s): Aysegul O. Aksoy; Mehmet Sukru Guney
Linked Author(s): Mehmet Şükrü Güney
Keywords: Dispersivity; Contaminant transport; Laboratory experiments; Groundwater flow
Abstract: Dispersivity is one of the most important parameters to model solute transport in porous media. In this study, laboratory tracer test was performed to determine dispersivity values. The contaminant transport was investigated by means of a channel 12 m long, 1.35 m wide, and 0.60 m high which was constructed within the Hydraulics Laboratory of Dokuz Eylul University. The heterogeneous medium was constituted from three different horizontal layers. Na Cl solution was used as tracer, and the electrical conductivities are measured by using a conductivity meter combined with an apparatus of 236 inputs manufactured locally. These values are converted to concentration values by using the calibration curve which was prepared before the experiments. The longitudinal dispersivities of each material were determined by using Mass Transport 3 Dimensional (MT3D) simulation model. They were obtained by applying the trial and error method until one gets an acceptable accordance between the observed and computed breakthrough curves.
Year: 2009