Version 1
: Received: 18 June 2022 / Approved: 20 June 2022 / Online: 20 June 2022 (09:41:58 CEST)
Version 2
: Received: 11 April 2023 / Approved: 12 April 2023 / Online: 12 April 2023 (04:46:14 CEST)
Sun, B.-H.; Guo, X.-L. Aerodynamic Shape and Drag Scaling Law of a Flexible Fibre in a Flowing Medium. Theoretical and Applied Mechanics Letters 2023, 13, 100397, doi:10.1016/j.taml.2022.100397.
Sun, B.-H.; Guo, X.-L. Aerodynamic Shape and Drag Scaling Law of a Flexible Fibre in a Flowing Medium. Theoretical and Applied Mechanics Letters 2023, 13, 100397, doi:10.1016/j.taml.2022.100397.
Sun, B.-H.; Guo, X.-L. Aerodynamic Shape and Drag Scaling Law of a Flexible Fibre in a Flowing Medium. Theoretical and Applied Mechanics Letters 2023, 13, 100397, doi:10.1016/j.taml.2022.100397.
Sun, B.-H.; Guo, X.-L. Aerodynamic Shape and Drag Scaling Law of a Flexible Fibre in a Flowing Medium. Theoretical and Applied Mechanics Letters 2023, 13, 100397, doi:10.1016/j.taml.2022.100397.
Abstract
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 remains unresolved. In this paper, we study the aerodynamic shape of dandelion, derive the scaling law of resistance, determine the Vogel exponent. In particular, we find that the total drag coefficient is proportional to the -2/3 power of the dandelion pappus Reynolds number, and obtain the terminal velocity of the dandelion seed under gravitation field.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Commenter: Bohua Sun
Commenter's Conflict of Interests: Author