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EFFICIENCY OF STEADY NON-UNIFORM FLOW THROUGH HOMOGENEOUS POROUS MEDIA

ABSTRACT An experimental investigation on the effect of convergent flow on the linear and non-linear parameters for different ratios of radii of the test section in a converging permeameter was studied. The relationship relating friction factor and Reynolds number using the square root of intrinsic permeability as the characteristic length is examined for flow in porous media with converging boundaries. Using the friction factor (fk) and Reynolds number (Rk) relationship, theoretical curves, which are similar to a Moody diagram used for pipe flow are developed and verified with the help of existing experimental data. In the present case, crushed rock of size 4.73 mm was used as media and water as fluid, to develop curves relating friction factor and Reynolds number with efficiency for different rate of flows of the test section of permeameter.