원형단면 노즐의 급확대 축소부를 통한 유동손실에 대한 연구 = A Study on the Flow Loss for Sudden Expansion and Contraction Part of Circular Pipe Nozzle

다국어 초록 (Multilingual Abstract)

To obtain an exact flow loss in piping systems is very important in the face of efficiency anticipation and work control of plant. The object of this study is to get the flow loss through the experiment for sudden expansion and contraction part of circular pipe nozzle. The experiment in this study is performed after getting the flow loss factor for sudden expansion and contraction through preliminary experiments. It is confirmed that the results of this study agreed with the approximated equation of Ikeda and Matsuo. It is proved that flow loss factor ${\zeta}_3$for sudden expansion and contraction part of circular pipe is dependent on $L/D_1$in these experimental conditions.