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We report an overshoot drag force acting to a rectangular cross-section column subjected to a step-function-like gust and discuss the effect of its shape and size of column-section on the overshoot ph...enomena of drag force based on our specially-equipped wind tunnel test results. Our findings indicate one of the most important factors of the overshoot force is the non-dimensional rise time defined by the rectangular section size, wind speed and gust rise time. It is confirmed that the overshoot coefficient of drag force is estimated using the non-dimentional rise time defined by the streamwise section size of column.続きを見る
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