Figure 3.

Carreau–Yasuda fluid in a square lid-driven cavity. Distribution of the x (left plot) and y (right plot) components of the velocity field taken at x = 0.5 L (left plot) and y = 0.5 L (right plot) for n = 0.2, 0.4, 0.6, 0.8, and 1.0 at Re = 1000 (a) and Re = 5000 (b). Close-ups emphasize the near-wall velocity profiles implying the central vortex displacements obtained lowering n. Dots represent numerical predictions obtained by Napolitano and Pascazio [48] while lines are for present model solutions.