Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2023 - September 06, 2023
In this experimental study, fluid dynamic response characteristics of wake galloping between two rectangular prisms of different size in tandem and staggered arrangement to their relative position and free stream velocity were investigated. An immovable rectangular prism at upstream side and another vibratile square prism was placed at downstream side. The vibratile prism at downstream side is elastically supported at it is both end and is restricted to vibrate in only cross-flow direction. From the experiments, it was found that the response characteristics can be classified in terms of relative position and free-stream velocity. Then the wake galloping phenomena occurred in the free-vibration experiments were reproduced by forced-vibration experiments in a water channel to conduct flow visualization. The visualization results well explained the phenomena observed in the wind tunnel experiment.
