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전산유체역학을 활용한 원전용 밸브의 유량계수 산출에 대한 연구STUDY ON CALCULATION OF FLOW COEFFICIENT BY CFD FOR VALVE IN NUCLEAR POWER PLANT

Other Titles
STUDY ON CALCULATION OF FLOW COEFFICIENT BY CFD FOR VALVE IN NUCLEAR POWER PLANT
Authors
김재형이정희
Issue Date
2016
Publisher
한국전산유체공학회
Keywords
전산유체역학(CFD); 유량계수(Flow Coefficient); 밸브(Valve); 원자력발전소(Nuclear Power Plant)
Citation
한국전산유체공학회지, v.21, no.4, pp 54 - 60
Pages
7
Journal Title
한국전산유체공학회지
Volume
21
Number
4
Start Page
54
End Page
60
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/729
DOI
10.6112/kscfe.2016.21.4.054
ISSN
1598-6071
Abstract
The valve used in nuclear power plant must be qualified but the limitation of the test facility leads to use the numerical analysis. The flow coefficient is calculated with the consideration of the pressure, velocity and geometry. And the flow coefficient is the important physical property which is prepared using experiment or analysis by valve manufacturer. In this study, the analysis model was made according to ISA 75.02.01 and the mass flow rate and pressure drop ratio was calculated. The model of the expansion factor was applied to the simulation result and the pressure drop ratio at the start of the choked flow in the valve was found. With the simulation result, the consideration was performed that the expansion factor is the important physical property to the system engineer in addition to the flow coefficient.
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