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FLUENT 5.4 코드를 이용한 양방향 유동 튜브에 대한 유동해석
강경호(Kyoung-Ho Kang),윤병조(Byung-Jo Yun),백원필(Won-Pil Baek) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Flow analyses using FLUENT 5.4 code were performed to validate the application of the local bidirectional<br/> flow tube in case of water and air flow. In this study, sensitivity studies have been performed to<br/> optimize the design features of the bi-directional flow tube which can be applied for the various experimental<br/> conditions. 2-dimensional axisymmetric steady state flow analyses have been performed. By calculating the<br/> differential pressure at both the front and the rear hole of the flow tube, K values were evaluated. The K<br/> values show good linearity regardless of the tube sizes and the Re numbers in both water and air flow. And<br/> system pressure and water subcooling didn’t affect the K values. Under the elevated pressure of 80bar with<br/> 80K water subcooling, the K value indicates a similar trend with the case of 2bar with 80K water subcooling.
강경호(Kyoung-Ho Kang),윤병조(Byung-Jo Yun),어동진(Dong-Jun Euh),백원필(Won-Pil Baek),유선봉(Sun-Bong Yu) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
An advanced flow meter applicable to large diameter piping system was developed using the average BDFT(Bidirectional Flow Tube). This flow meter can be used to measure the flow rate of discharged gas having fine floating particles in the stack of the chemical reactor and the large-sized boiler. Also it can be applied to the large-sized industrial piping system having flow of oil without structural instability. As a first step of commercialization, we designed and manufactured the flow meters which are applicable to piping system having diameter of 200㎜ and 500㎜. The calibration test results indicated that this flow meter has linaerity within 0.5% in the Re number range of above 10,000 where is meaningful in terms of application.