Critical Study on Rotational Flow of a Fractional Oldroyd-B Fluid Induced by a Circular Cylinder

Figure 5

Profiles of the velocity 𝑤(𝑟,𝑡) and shear stress 𝜏(𝑟,𝑡) given by (3.16) and (3.23) for 𝑡=7 s, 𝑅=0.3, Ω=1, 𝜆=5, 𝜆_𝑟=2, 𝜈=0.003, 𝜇=2.96, 𝛽=0.4, and different values of 𝛾.

(a)

(b)