Abstract
There is a check valve which is widely used as one of the directional control valve. The valve is simple structures that push the valve body by spring. But, vibration may cause the internal state of flow and channel shape and the valve body. It is important to assess the mechanism of this phenomenon and valves behavior in terms of longevity and reliability of fluid machinery. Therefore, in this research, we reveal the internal flow condition and evaluate the relevance of the valve body vibration by using CFD simulation and visualization system that models the valve.
