Table 1 Summary of the (advancing) contact angles θ of the invading phase on the beads, surface tension γ between the invading and defending phase, and the viscosity ratios η 1/η 2 of invading and defending phase for different materials combinations used in this study.
From: The Role of Local Instabilities in Fluid Invasion into Permeable Media
liquid pair | bead material | θ [°] | γ [mN/m] | η 1/η 2 |
|---|---|---|---|---|
Air - water | glass | 20 ± 10 | 70 | 0.02/1 |
Dodecane - water | basalt | 75 ± 15 | 47 ± 1 | 1.4/1 |
AK0.65 - water | glass | 90 ± 10 | 40 ± 1 | 3.3/1 |
Dodecane - water | glass | 125 ± 15 | 47 ± 1 | 1.4/1 |
AK100 - water | glass | 135 ± 15 | 42 ± 2 | 100/1 |
AK10 - water | glass | 140 ± 15 | 42 ± 2 | 10/1 |
AK1000 - water | glass | 140 ± 15 | 45 ± 1 | 1000/1 |
Dodecane - water | glass (OTS) | 165 ± 15 | 47 ± 1 | 1.4/1 |
