Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
This study investigates the phenomenon of in-line vibration of a square prism, one of the structural elements, in the flow direction. The purpose of this study was to control vibrations by directly controlling the flow separating from the object by attaching control plates to the corner of the object surface of the square prism. The number of control plates installed at the corners of the square prism and the method of installation were varied. Moreover, the control plates were perforated and non-perforated. In the experiment, the test model was installed in a free vibration apparatus that can vibrate only in the flow direction in a wind tunnel, and the flow-induced vibration response characteristics were investigated by changing the number and the presence of the control plates. Instantaneous displacement of the model was measured by means of Laser Displacement Anemometer. From the experimental results, it was found that the vibration effect obtained differs depending on the method of installation and shape of the control plates. Therefore, the method used in this study can suppress the displacement of flow-induced vibration in the-line direction.
