Figure 7.

Comparison of the diffusion layer and pressure node between experimental and simulation results. (a) The region of diffusion observed in experiments, given by the region where the dye intensity falls between 0.2 and 0.8, compares favorably with the numerical prediction for different concentration of NaCl. (b) The mean locations of the particles together with the minimum and maximum locations (shown in blue) are in good agreement with the location of the pressure node (predicted by numerical model and shown in red) for different concentration of NaCl.