The results of normalized fluid velocity distribution for M=1 and M=5 in the pore spaces at 50% saturation after the simulation converges are plotted in Figs. 6a and 6b, respectively. The fluid velocity field is normalized to consider the effect of viscosity change using the equation\(U^{*}=\frac{U}{PL/\mu}\) . It can be seen that the normalized fluid velocity is higher at M = 5 than at M = 1, indicating thatk nw is higher at M = 5 than at M = 1, in agreement with our relative permeability curve.