Nonlinear Magnetoconvection in a Sparsely Packed Porous Medium

Figure 4

Numerically computed secondary instability regions of Eckhaus instability (E), Zigzag instability (Z), and stable regions (S) are plotted in (𝜆₂/𝜆₁,𝛿𝑞_𝑠)-plane for 𝑄=2000, 𝐷_𝑎=1500, Λ=0.85, 𝜙=0.9, 𝑀=0.9, Pr₁=1, and Pr₂=2. As |𝛿𝑞_𝑠| increases then the secondary instability regions increases.