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

Figure 7

Profiles of the velocity 𝑤(𝑟,𝑡) corresponding to the Newtonian, ordinary second grade, fractional second-grade, Maxwell, fractional Maxwell, Oldroyd-B and fractional Oldroyd-B fluids, for 𝑡=5 s, 𝑅=0.3, Ω=1, 𝜆=4, 𝜆_𝑟=2, 𝜈=0.004, 𝜇=2, 𝛾=0.7, and 𝛽=0.5.