Velocity of viscous fingers in miscible displacement: Comparison with analytical models

The paper investigates the linear growth of mixing zone, in a pessimistic scenario, during polymer slug injection into water reservoir. velocities front and boundaries zone are numerically analytically studied as key parameters characterizing miscible displacement. Using two different numerical methods (finite volumes finite elements), impact size, reservoir dimensions, Peclet number, viscosity curve shape on corresponding examined. Notwithstanding realization solution by computational schemes, simulation results coincide with sufficient accuracy. obtained compared theoretical estimates within transverse flow equilibrium approximation Koval model. Based comparison pattern, recommendations presented use specific analytical for estimating rate depending characteristics polymer.