Frequency-Dependent Streaming Potential of Porous Media—Part 1: Experimental Approaches and Apparatus Design
Figure 1
The maximum pressure difference generated by flowing an aqueous fluid through a porous medium using a harmonic piston. Imposed piston frequency (from 0.1 to 104 Hz), , sample length (10 and 100 mm) and piston displacement (0.1 mm and 2 mm), with the fluid parameters and , which correspond to a 10−3 mol/L solution of NaCl at 25°C.
