AbstractThe experimental identification of transversal dispersivity in the laboratory is not a very developed subject; the authors herein propose two methods for identifying transversal dispersivity in laboratory experiments, based on the analytical solution of a continuous, point‐like, injection of a nonreactive solute in a flow tank packed with a homogeneous porous medium. The solute transport is supposedly two‐dimensional, whereas the hydraulic flow is monodimensional with a uniform velocity.Each identification method is based on the measurement of concentration in pairs of points. In the first method the points are taken along lines normal to the direction of the fluid flow, with one of the two points set on the central axis of the flow tank. In the second method the two measurement points are placed on lines passing through the solute injection point.The stability of the two methods, with respect to concentration measurement errors, is analyzed to assess the reliability of the transversal dispersivity estimate. Furthermore, the two methods are found to be sensitive to variations of the concentrati
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