원자력 발전소용 3축 편심 나비형 밸브에 발생하는동수력토크 해석 모델 검증 = VALIDATION OF THE HYDRODYNAMIC TORQUE ANALYSIS MODEL GENERATED IN TRIPLE ECCENTRIC BUTTERFLY VALVE FOR NUCLEAR POWER PLANT

다국어 초록 (Multilingual Abstract)

In this study, the numerical analysis model has been validated using experimental data for the hydrodynamic torque prediction in the triple eccentric butterfly valve for nuclear power plant. The diameter of the two sizes of butterfly valves are 4 inch and 12 inch. Prediction of hydrodynamic torque and validation for numerical analysis model through flow coefficient have been performed in previous study. Additionally, comparison of the flow coefficient between experimental and numerical data has been performed for validation. Numerical analysis model has been validated by verifying the similarity of flow coefficient because flow coefficient is a factor that only affect the shape of valve. First, the similarity has been verified by comparing the flow coefficient in full-open condition. Further, the similarity has been verified by comparing the flow coefficient in all opening degrees. As both results are similar, the numerical analysis model has been determined for validation, and it has been additionally secured that the reliability of the hydrodynamic torque results predicted in the previous study.

참고문헌 (Reference)

1 강창원, "화력발전소용 1인치 볼 밸브 유량계수 Cv에 관한유동해석 및 실험에 관한 연구" 한국기계가공학회 18 (18): 109-115, 2019

2 장승언, "원자력 발전소용 3축 편심 나비형 밸브에 발생하는동수력 토크에 관한 수치적 연구" 한국유체기계학회 21 (21): 28-33, 2018

3 이종욱, "설계인자 변경에 따른 버터플라이 밸브 유동 특성에 관한 연구" 한국전산유체공학회 15 (15): 64-70, 2010

4 Bae, J.H., "Prediction of a Required Dynamic Torque for Motor-operated Butterfly Valves" 2002

5 Chern, M.J., "Performance test and flow visualization of ball valve" 31 (31): 505-512, 2007

6 전홍필, "CFD 해석방법을 이용한 PFA 라이닝 볼밸브의 유량계수 예측" 한국유체기계학회 19 (19): 35-38, 2016

7 Kim, D.W., "An Analysis and Evaluation of Differential Pressure Calculation of Motor Operated Valve using System Flow Model" 2 (2): 506-511, 1999