Abstract
In Japan, where the energy supply structure is fragile, maintaining the safety of nuclear power plants is a top priority. In plants, flow in the piping causes defects and wall thinning. For that reason, nondestructive inspection and early detection of abnormalities in piping in power plants are required to ensure safety. Therefore, the objective of this study is to develop a flow visualization system to improve safety in plants. As a piping inspection method, we focused on UVP (Ultrasonic Velocity Profiler) due to its non-invasiveness, high measurement accuracy, and measurement applicability. The UVP device is characterized by its portability, which makes it highly compatible with Augmented Reality (AR) technology. The developed system visualizes the flow field by superimposing an image of the flow field created based on data obtained by the UVP method and an image of the measurement position taken by a camera. This system was used to visualize and measure the flow in a circular tube and the Kalman vortex flow. As a result, the accuracy of the image projection position and the reproducibility of the flow field were confirmed, demonstrating the effectiveness of this system.
