制御平板による正方形柱のインライン流力振動の制御に関する実験的研究

抄録

This study investigates the phenomenon of in-line vibration of a square prism, one of the structural elements, in the flow direction. A control plate is installed at the corner of the surface of the square prism to investigate the effect of control plate length and porosity on the flow-induced vibration. 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 length and porosity of the control plate. 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 mounting and shape of the control plate. Therefore, the method used in this study can suppress the displacement of flow-induced vibration in the-line direction.