Effects of the Schmidt numbers on plug propagation and rupture. Time evolution of (a) plug length (Lp), (b) maximum difference in wall pressure (Pmax−Pmin) and (c) maximum difference in wall shear stress (τmax − τmin). (Lpi = 1.0, h2 = 0.05, C0 = 10−4, Δp = 1, λ = 100, β = 0.7, χ = 0.01, Ka = 104, Kd = 100).