Geodesic
Equations of liquid filtration in double porosity media as a~reiterated homogenization of Stokes equations
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Differential equations and dynamical systems, Tome 278 (2012), pp. 161-169

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An exact double porosity model for the liquid filtration in an absolutely rigid body is derived from homogenization theory. The governing equations of fluid dynamics on the microscopic level consist of the stationary Stokes system for a slightly compressible viscous fluid filling voids in a solid skeleton. In turn, this domain (voids) is a union of two independent periodic systems of cracks (fissures) and pores. We suppose that the dimensionless size $\delta$ of pores depends on the dimensionless size $\varepsilon$ of cracks: $\delta=\varepsilon^r$ with $r>1$. As a result we derive the usual Darcy equations of filtration for the liquid in cracks, while the liquid in pores is blocked and unmoved. 
@article{TM_2012_278_a14,
     author = {Anvarbek Meirmanov},
     title = {Equations of liquid filtration in double porosity media as a~reiterated homogenization of {Stokes} equations},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {161--169},
     publisher = {mathdoc},
     volume = {278},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2012_278_a14/}
}
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Anvarbek Meirmanov. Equations of liquid filtration in double porosity media as a~reiterated homogenization of Stokes equations. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Differential equations and dynamical systems, Tome 278 (2012), pp. 161-169. http://geodesic.mathdoc.fr/item/TM_2012_278_a14/