Research Article
Frequency-Dependent Streaming Potential of Porous Media—Part 1: Experimental Approaches and Apparatus Design
Figure 5
Detailed design of the electromagnetic drive apparatus: (a) complete, (1) perspex tube, (2) sample, (3) drilled polycarbonate disk, (4) spring, (5) screwed output end enclosure, (6) screwed input end enclosure, (7) piston, (8) fluid input check valve (Swagelok), (9) fluid output connector (Swagelok), (10) downstream streaming potential electrode, (11) downstream dynamic pressure transducer, (12) steel frame, (13) steel base, (14) LVDT, (15) EM shaker, (16) adjustable vibration damping feet, and (17) clamp to hold tube. (b) Details of the piston assembly, (1) perspex tube, (2) sample, (3) drilled polycarbonate disk, (4) circlip, (5) spring, (6) screwed output end enclosure, (7) screwed input end enclosure, (8) streaming potential electrodes (×2), (9) sealing mechanism for inserting streaming potential electrodes, (10) dynamic pressure transducers (×2) downstream, and (11) piston.
