Dispersivity Calculator

The dispersivity equations are based on a characteristic length, L.  This length is calculated based on the nominal plume radius.  To evaluate the radius, enter the injection rate, duration of injection, formation porosity and formation thickness.  From these data, a piston displacement cylinder is calculated.  Using the radius of that cylinder and a dispersivity of 150 ft, the characteristic length is calculated assuming the edge of the plume is defined by the 1 x 10-9 normalized isoconcentration line.