First Problem of Stokes for Generalized Burgers' Fluids

Figure 1

Profiles of the velocity field 𝑢(𝑦,𝑡) and the shear stress and 𝜏(𝑦,𝑡) given by (3.7) and (3.11), for 𝜆₁=3,𝜆₂=4,𝜆₃=2,𝜆₄=8, and different values of 𝑡.

(a)

(b)