角柱後流内の円柱のウェイクエクサイテーションに関する研究

概要

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Wake excitation is an important problem for tandem circular cylinders. It is well known that this phenomenon iscaused by the interaction between the downstream cylinder and the wake flow of the upstream cylinder. However,this phenomenon is affected by the Reynolds number because the flow properties around a circular cylinder aresensitive for this parameter. To simplify this phenomenon and investigate the only interaction between thedownstream cylinder and the wake flow the Re-number effect should be reduced. In this study, some kinds ofrectangular cylinders were used instead of the upstream circular cylinder to reduce the Re-number effects. It wasaimed to understand the influence of the separation flow from the upstream rectangular cylinder on the aerodynamicresponse of the downstream circular cylinder, and to examine the excitation mechanism of the downstream circularcylinder. Two kinds of wind tunnel experiments were carried out as follows; Model response measurement with twodegrees of freedom system and the surface pressure measurement of the downstream circular cylinder.
一般社団法人日本風工学会の論文