蒲公英
阻力
空气动力阻力
空气动力学
物理
蒲公英
阻力系数
机械
雷诺数
幂律
数学
湍流
统计
医学
病理
中医药
替代医学
作者
Bohua Sun,Xiao-Lin Guo
出处
期刊:AIP Advances
[American Institute of Physics]
日期:2023-08-01
卷期号:13 (8)
被引量:8
摘要
The common dandelion uses a bundle of drag-enhancing bristles (the pappus) that enables seed dispersal over formidable distances; however, the scaling laws of aerodynamic drag underpinning pappus-mediated flight remain unresolved. In this paper, we find that the aerodynamic drag of dandelion is approximately proportional to the −2/3 power of the dandelion pappus Reynolds number, and the terminal velocity of dandelion seeds is proportional to the 3/4 power of dandelion pappus weight. By the way, the Vogel exponent −2/3 for dandelion is determined.
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