Influence of Temperature Gradient on the Stability of a Viscoelastic Film with Gradually Fading Memory over a Topography with Ridges and Furrows

Figure 3

Variation of growth rate with wavenumber for a vertically falling Newtonian isothermal film: (a) Re=0.5, (b) Re=1 and (c) Re=5; (1)𝑊=1, (2)𝑊=5, and (3)𝑊=10. In a(i)–c(i), solid lines represent 𝐴_𝑙=0, and broken lines are the results for 𝐴_𝑙=0.4, and (ii) and (iii) are for 𝐴_𝑙=0.7 and 𝐴_𝑙=0.9, respectively.

(a)

(b)

(c)