The pressure drop for steady uniform flows (UF) through low permeability porous media - packed bed of particles (balls and rods) and sand (K<10-7m2) - is predicted using the existing global Hazen-Dupuit-Darcy (HDD) hydraulic model, composed of the viscous and form drag terms. In this work, experiments are performed to generate pressure drop data for accelerated steady flows through porous media for a wide range of low permeability (10-9