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2단 유량제어 Fluidic Device의 특성에 관한 연구
조봉현,배윤영,박종균,유성연,Cho, Bong-Hyun,Bae, Yoon-Yeong,Park, Jong-Kyun,Yoo, Seong-Yeon 한국유체기계학회 2001 한국유체기계학회 논문집 Vol.4 No.3
Vortex type Fluidic Device(FD) which is installed at the bottom of Safety Injection Tank(SIT) controls the discharge flow rate from the tank. In case of loss of coolant accident the injection water flows into primary system in two steps; initial high flow rate for certain period of time and subsequent low flow rate. By two-step control of the discharge flow rate, FD can ensure the effective use of water in the tank. A small-scale FD has been tested to obtain a required flow characteristics maintaining full pressure and height of prototype, which are the major contributing parameters. Through the testing of many different arrangements of internal geometry of FD, most appropriate one was selected and its performance data was obtained. As characteristics of FD, time dependent Euler number, flow rate and pressure are presented and discussed. Also a method to predict the full size FD is presented.