A Modified Homotopy Perturbation Transform Method for Transient Flow of a Third Grade Fluid in a Channel with Oscillating Motion on the Upper Wall

Figure 3

Plot of velocity field 𝑢 for varying values of 𝜔 for small time 𝑡=1 and 𝛼=0.5, 𝜉=−0.7, and 𝛽=0.5.

(a)

(b)