Experimental Study of Mixing Efficiency in Laminar Flow for Circular Pipe with Perforated Plate Mixer

Abstract

Flow in circular pipe equipped with Fractal Perforated Plate may be another solution in enhancing flow properties in laminar flow instead of using orifice. The purpose of this study is to investigate the pressure drop in laminar flow in circular pipe with perforated plate. Three patterns of perforated plate in various porosity, β of 0.38, 0.50 and 0.70 were used for this investigation. The perforated plate patterns reacted to eight openings of discharge ball valve and resulting the finding of mass flowrate measurement, pressure drops and flow visualization. Data from the three plates suggest that there will be increment of pressure drop and reduction on mass flowrate with lower β value, thus affecting the flow conditions. This investigation also compares the turbulent mixing properties generated with and without the existence of perforated plate in the circular pipe. This study proved that perforated plate of β equals to 0.38 produced higher mixing properties in laminar flow compare to the other two other plates. This statement was strengthened by the images of flow visualization and pressure drops table gained from the experiment.