Fig. 3
From: Stokes flow analogous to viscous electron current in graphene

Velocity field obtained from micro-particle image velocimetry for different eccentricities. Color map of fluid velocity magnitude |u| obtained by μPIV in the cavity region for a e → 1, Re = 0.07; b e = 0.95, Re = 0.08; and c e = 0.9, Re = 0.07. Velocity field and streamlines are shown by arrows and lines, respectively