Interdependence of leakage current on sand grain size and conductivity
Leakage current intensities are seen to depend on changes in the polluting sand’s salinity (and hence conductivity) and grain size. Based on the above results, the relation between leakage current and conductivity with different sand grain sizes, or layer thickness, was numerically derived and is shown in Fig. 3a. Similarly, the relation between leakage current and grain size with different sand conductivities was produced and is shown in Fig. 3b.