On the Validity of the “Thin” and “Thick” Double-Layer Assumptions When Calculating Streaming Currents in Porous Media

Figure 3

Dimensionless streaming current (I_d) as a function of dimensionless pore radius (r_d) for concentration values of (a) 0.001 M; (b) 0.01 M; (c) 0.1 M; (d) 0.5 M; (e) 1 M; (f) 2 M. Curves denote surface charge values of 1, 5, 10, 50, and 100 mC·m⁻², with curves ordered between the maximum and minimum values indicated on the plots. The 100 mC·m⁻² case is not shown in Figure 3(a).

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