Adaptive Double-Diffusion Model and Comparison to a Highly Heterogeneous Micro-Model

Figure 1

Periodic heterogeneous media. (a) Ω₁: white, Ω₂: grey, and Ω₃: dark grey. (b) Zoom of one cell 𝑌: 𝑌₁: white, 𝑌₂: grey, and 𝑌₃: dark grey. (c) 𝑌₃ in grey with the internal and external boundaries Γ_2,3,Γ_1,3, respectively. (d) Illustration of three regions as in Example 3.1, where Ω₂ is delimited by the white boundaries, and Ω₃ is the region between by the black and the white boundaries.