Stability Analysis of Gravity Currents of a Power-Law Fluid in a Porous Medium

Figure 4

Time evolution of the perturbation for a shear-thinning fluid and (a) and (b). The dashed line is the perturbation at a given time, and the subsequent curves refer to perturbation at subsequent time, with a time step equal to 0.001. The perturbation experiences an initial growth (not shown) followed by a decay.

(a)

(b)