Asymptotics for models of non‐stationary diffusion in domains with a surface distribution of obstacles

We consider a time‐dependent model for the diffusion of a substance through an incompressible fluid in a perforated domain Ωϵ, Ωϵ⊂Ω⊂Rn with n = 3,4. The fluid flows in a domain containing a periodical set of “obstacles” (Ω\Ωϵ) placed along an inner (n − 1)‐dimensional manifold Σ⊂Ω. The size of the o...

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