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 4

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

(a)

(b)