209678.fig.004a
(a)
209678.fig.004b
(b)
Figure 4: Profiles of the velocity 𝑤 ( 𝑟 , 𝑡 ) and shear stress 𝜏 ( 𝑟 , 𝑡 ) given by (3.16) and (3.24) for 𝑅 1 = 0 . 3 , 𝑅 2 = 0 . 5 , Ω 1 = 1 , Ω 2 = 1 , 𝑡 = 8 , 𝜈 = 0 . 0 0 3 , 𝜇 = 2 . 9 1 6 , 𝛽 = 0 . 5 , and different values of 𝜆 .