In this paper, we start investigating one- and two-phase flow in so-called vugular porous media. Amacroscopic one-phase flow model, derived from volume averaging the Darcy-Brinkman model at the scale of vugs, is first proposed under the classical constraint of length-scale separation. This model is further investigated from a numerical point of view by solving the associated closure problem over a simple periodic model of vugular medium. Equivalent permeability results are validated by comparison with experimental data obtained on the same geometrical configuration over a wide range of media and by simple approximations resulting from permeability composition. Finally, two-phase flow is investigated from a phenomenological point of view by performing oil/water flow experiments on the same type of medium.
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