Dynamic permeability

Dynamic permeability refers to how easily a material allows fluids to pass through it when subjected to changing or oscillating conditions, such as fluctuating pressure or flow speed. Unlike static permeability, which measures flow under steady, unchanging conditions, dynamic permeability accounts for the material's response to dynamic forces, capturing how its properties may vary over time or frequency. This concept is important in fields like petroleum engineering, hydrogeology, and material science, where understanding how flow behavior adapts to different conditions helps optimize extraction, filtration, or material performance.