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摘要


本研究進行風洞實驗並且量測騎乘在腳踏車上,穿著競賽衣之假人阻力。風速範圍約為5~20m/s,並且探討不同賽車衣在不同風速下對於整體阻力面積的影響。以整體趨勢而言,在風速低於9m/s,隨著風速提升,阻力面積將增加或是大致上持平;風速高於9m/s 之後,當風速增加時,模型之阻力面積大致降低。其中發現在表面曲率較大的位置放置不同突起表面,可造成不同效果。本研究發現在肩膀位置放置圓形突起表面時,整體阻力面積結果會較低。放置長條型突起物時則會造成阻力增加。

關鍵字

競賽衣 減阻 阻力 阻力面積

並列摘要


The drag of the mannequin with cycling suit on the bike is measured by the wind-tunnel experiment which the range of the wind speed is between 5 and 20 m/s. Through the experiments, the influence of the cycling suits on the drag area is investigated under different wind speeds. In the range of the speed lower than 9 m/s, the drag area is almost the same or increased slightly while the wind speed increased. In the range of the speed higher than 9 m/s, the drag area of the model decreased significantly. It's found that the drag reduction effect is different if various patches are placed on the large-curvature position. The drag area is lower when the patches with round protrusions are placed around the shoulder and it's higher if the patches with elongated protrusions are placed.

並列關鍵字

Cycling suit drag reduction drag drag area

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