Gas Permeability Measurement
Darcy’s law, is the main equation by which one can describe laminar flow of an incompressible fluid in a porous medium. It is the relationship of the macroscopic velocity (i.e. flux) of a fluid with a known viscosity to the pressure gradient by a proportionality factor called absolute permeability, measured in Darcy. Permeability is the ability of a rock or porous medium to conduct flow. It is totally dependent to the geometry of the rock and pore network.
In this experiment nitrogen flows through the Sample from a cylinder. Pressure drop during the test is measured. Permeability of the sample will be estimated using Darcy’s equation for compressible fluids in steady state method.