Unsteady Unidirectional Flow of Second-Grade Fluid through a Microtube with Wall Slip and Different Given Volume Flow Rate

Figure 4

The effect of different Kn values on the velocity profiles for trapezoidal piston motion at 𝛽=0.05: (a) 𝑡^∗=0.0012, (b)𝑡^∗=0.0305, (c) 𝑡^∗=0.0366, and (d) 𝑡^∗=0.0427.

(a)

(b)

(c)

(d)