Table 1:
Properties of the fluids used in the experiments.
Wetting phase, water (with 0.05 g/L nigrosine)
Density,
1000 kg/m
^{3}
Dynamic viscosity,
N.s/m
^{2}
Non-wetting phase, mineral oil
Density,
880 kg/m
^{3}
Dynamic viscosity,
0.068 N.s/m
^{2}
Interfacial tension [
22
],
γ
0.049 N/m
Viscosity Ratio,
M
0.015