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.
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