Electrohydrodynamic Instability of Two Thin Viscous Leaky Dielectric Fluid Films in a Porous Medium

Figure 10

Variation of growth rate 𝜔 with wavenumber 𝑘 for various values of 𝜀 when 𝑘₁=3, 𝑆¹⁽⁰⁾=0, 𝑆²⁽⁰⁾=0, 𝜖₁=3, 𝜖₂=4, 𝛽=0.5, 𝜇_𝑟=1, and 𝜀=0.1,0.3,0.5, respectively.