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Orthogonal test parameters of drag coefficient.
| Considerations | Range of Values | ||
|---|---|---|---|
| oil saturation (%) | 30 | 50 | 70 |
| Surfactant Concentration (%) <interfacial tension (mN/m)> |
0.05 (1.5 × 10−1) |
0.1 (5.1 × 10−2) |
0.2 (8.4 × 10−3) |
| Velocity of flow (m/d) | 2 | 4 | 8 |
