engleski

Homogenization of the Darcy-Lapwood-Brinkman flow in a thin domain with highly oscillating boundaries

In this paper, we investigate the flow through a thin corrugated domain filled with fluid-saturated porous medium. The porous medium flow is described by the nonlinear Darcy–Lapwood–Brinkman model acknowledging the viscous shear and the inertial effects. The thickness of the domain is assumed to be of the same small order ε as the period of the oscillating boundaries. Depending on the magnitude of the permeability with respect to ε, we rigorously derive different asymptotic models and compare the results with the non-oscillatory case. We employ a homogenization technique based on the adaption of the unfolding method and deduce the influence of the porous structure and boundary oscillations on the effective flow.

Darcy-Lapwood-Brinkman equation ; thin domain ; highly oscillating boundary ; unfolding method

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