共振風速近傍での長方形柱の空力不安定振動応答に対して動力学特性値が与える影響とその機構

概要

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We can recognize such particular behaviors that the divergent response in heaving mode over the resonant velocity is not much dependent on the Scruton number of a rectangular cylinder with D/B=2. In the range of much higher reduced velocity than the resonant velocity, we found that the self-excited forces generated by both the quasi-steady flow and the motion-induced flow structures cause the particular response behaviors: However, in the range of comparatively low reduced velocity, the force generated by vortices in the wake of a rectangular cylinder as well as the self-excited force have much effect on response behaviors. Therefore, we try to clarify the mechanism of particular behaviors in response around the resonant velocity.
社団法人日本建築学会の論文
2000-10-30