Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2017 - September 06, 2017
The determination of energy losses caused by flow division at T-junctions is important in the design and analysis of industrial fluid transport systems. In this study, an experimental study is performed for dividing square duct flow in 90 degree T-junction with sharp and rounded corners. The Reynolds number Re based on the mean velocity and the hydraulic diameter ranges from 1.3 × 103 to 1.8 × 104.The flow rate ratio (i.e., the ratio between the branch and main duct flow rates) is set from 0.2 to 0.8. Duct width and height are fixed at 10 mm in the main and branch ducts. The wall static pressure and loss coefficient are measured to quantify the energy loss. The loss coefficient of the branch duct with sharp corner increases rapidly as increasing flow rate ratio. Rounding the corner reduces the pressure loss in the branching flow. These experimental data provide empirical loss coefficient equations for T-junctions, which constitute useful tools for the determination of loss coefficients for T-junction.
