Abstract
A check valve is installed in many pipe systems to allow flow only a certain direction. A swing-type check valve has been often utilized due to its lower pressure drop, reliable sealing, and a wide range of available sizes. However, repeated vibration of a disc during operation in an unsuitable velocity range leads to excessive wear of disc components. The present study provides the method of reducing flow-induced vibrational damage on a disc by attaching a pair of winglet-like structures to a disc. The attached structures are parameterized by two control parameters, the height(H) and the attached angle(θ). The vibration reduction performances for different combinations of the control parameters are investigated using computational fluid dynamics simulation with a large-eddy simulation technique.
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