PERMEABILITY 5. Show from Darcy's equation that permeability has a dimension of Length squared (L2) 6. The Carman-Kozeny equation for a granular material with spherical grains is given by k= kot Sup For granular materials, kot = 5. This constant (kozeny constant) was empirically determined through laboratory measurements by Carman For a sample with grain diameters of 150 microns, porosity () of 40%, compute the permeability of the sample. Hint Svo = Svp Svo = (1-Sve Svo and Sve are the specific surface area per unit bulk volume and specific surface area per unit grain volume respectively