樹形の違いを想定した小型平面模型の風力係数とその評価

概要

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A series of wind tunnel tests has been performed on the small plane model assuming a difference in tree form. The small plane model is manufactured with a tree crown part using plywood and plastic board (the form of each of five boards, whose area ranges from 144.5cm2 to 450cm2, differs) and a trunk part using vinyl chloride rod. Testing was conducted by making a steady wind act gradually from a wind velocity of 4m to 22m, and the rate of acceleration, which disturbed the flow of air artificially at each wind velocity, was measured. The wind force coefficient, CD, of each small plane model was calculated from the experiment result, and the relationships between CD and wind velocity, CD and the aspect ratio of the plane model, and CD and a dominant frequency were investigated. It was shown that the coefficient of wind force can be presumed from the area and the aspect ratio of the plane model by formulizing and arranging these relationships.
東海大学の論文
2004-09-30