Kaji Eksperimental Efek Separasi Flow Pada Arah Radial Terhadap Performa Rectangular Elbow Dengan Variasi Bilangan Reynolds

Abstract

This study aimed to determine the effects of flow separation on the distribution pattern statics pressure recovery in the flow through the rectangular elbow. The study was conducted experimentally by measuring the static pressure at the area of radius r at the center of curvature. Pressure measurements were made with three variations of the Reynolds number (Re). The results of the measurement of static pressure generally indicates that the flow pattern in the radial direction is formed does not undergo significant changes with the change of Reynolds number / flow rate. The results of measurement obtained information that has outerwall side pressure coefficient (Cp) is positive, while in the inner side wall has a pressure coefficient (Cp) is negative. This shows that the outer side has a greater pressure than the inner side. In the radial direction the pressure coefficient (Cp) increased as you bend radius of curvature rectangular, which means that the larger the finger - the finger curvature, stress the fish is also getting bigger. This research has not found any effect on the pattern of change in Reynolds number and flow characteristics that form the radial direction passing through the channel testing.