Intrinsic Permeability

Permeability in fluid mechanics and the earth sciences is a measure of the ability of a porous material (often a rock or an unconsolidated material) to allow fluids to pass through it. Intrinsic permeability is permeability that is an intensive property (not a spatial average of a heterogeneous block of material) that is a function of the material structure only (and not of the fluid), and explicitly distinguishes the value from that of relative permeability.