ANALYSIS OF FLOW THROUGH POROUS MEDIA: A CASE STUDY OF OSUN RIVER SAND, OSOGBO, OSUN STATE,NIGERIA.

Abstract

A study was conducted to determine the index and hydraulic properties of the porous and at five (5) metres interval during the November period. Specific gravity, moisture content, particle size distribution (PSD) and permeability test of the porous media were determined in accordance with the International Standard IS: 2720. Data from the above-mentioned tests were analysed using Statistical Package for Social Sciences (SPSS). The specific gravity of the sand (2.65 to 2.67), coefficient of curvature (0.54 to 1.35) and uniformity coefficient (1.25 to 2.77) show that the sand samples are well graded and uniformly distributed. The models generated for the locations were . Where f is the friction factor; Re is the Reynolds number; Q is the flow rates;is the hydraulic gradient and is the velocity of flow. The hydraulic conductivity of the river sand sample ranges from for the various locations considered and location A at upstream of the river bed which is about 1m depth from river level has the highest value (and location G at downstream of the river bed which is about 1.5 m depth from river level has the lowest value ( are good location. It is recommended that proper attention should be given to the friction factor, velocity of flow, flow rate and the Reynolds number as these are the main parameters that result in flooding of embankment thereby resulting in environmental hazard and seepage of water through dams.media.