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Computational Investigation of Three-Dimensional Unsteady Flowfield Characteristics Around Insects' Flapping Flight
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Jin-Ho | - |
dc.contributor.author | Kim, Chongam | - |
dc.date.accessioned | 2023-04-19T07:01:37Z | - |
dc.date.available | 2023-04-19T07:01:37Z | - |
dc.date.created | 2021-04-07 | - |
dc.date.issued | 2011-05 | - |
dc.identifier.citation | AIAA Journal, Vol.49 No.5, pp.953-968 | - |
dc.identifier.issn | 0001-1452 | - |
dc.identifier.uri | https://hdl.handle.net/10371/190754 | - |
dc.description.abstract | This paper investigates the unsteady flowfield characteristics around three-dimensional insect flapping motion under forward flight conditions. A realistic wing trajectory, called the "figure-of-eight" motion, is extracted from a blowfly's (phormia regina) tethered flight experiment under a freestream velocity of 2.75 m/s. In the authors' preliminary research [Lee, J., Kim, J., and Kim, C., "Numerical Study on the Unsteady-Force-Generation Mechanism of Insect Flapping Motion," AIAA Journal, Vol.46, No.7, 2008., pp. 1835-1848. doi:10.2514/1.35646], the two-dimensional blowfly's wing motion was computationally investigated, and the results revealed very interesting and distinctive vortical flowfields, which provide a decisive clue in understanding the rapid maneuverability of insects' flight. On the line of continuous efforts, the present work investigates the role of three-dimensional vortical structure in unsteady aerodynamic force generation. Detailed numerical simulation and analysis on three-dimensional flapping motion are conducted, and interesting flow features of insects' flapping flight are observed, such as the existence of a spanwise flow component, leading-edge vortex, wing tip vortex, trailing-edge vortex, and various forms of vortex tubes and vortex rings. It turns out that vortical structures play a crucial role in determining unsteady characteristics of lift and thrust generation. In particular, the vortex pairing and vortex staying phenomena, which have been observed in two-dimensional flapping motion, are also observed but with a more complicated pattern. On top of that, distinctive lift and thrust generation is observed owing to three-dimensional wing shape, trajectory, and vortex structure. Consequently, the results of the present work provide an important clue in understanding generation of aerodynamic force for rapid maneuverability in insects' flight. | - |
dc.language | 영어 | - |
dc.publisher | American Institute of Aeronautics and Astronautics | - |
dc.title | Computational Investigation of Three-Dimensional Unsteady Flowfield Characteristics Around Insects' Flapping Flight | - |
dc.type | Article | - |
dc.identifier.doi | 10.2514/1.J050485 | - |
dc.citation.journaltitle | AIAA Journal | - |
dc.identifier.wosid | 000291072000008 | - |
dc.identifier.scopusid | 2-s2.0-79955462767 | - |
dc.citation.endpage | 968 | - |
dc.citation.number | 5 | - |
dc.citation.startpage | 953 | - |
dc.citation.volume | 49 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Kim, Chongam | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | LOW-REYNOLDS-NUMBER | - |
dc.subject.keywordPlus | HOVERING FLIGHT | - |
dc.subject.keywordPlus | AERODYNAMIC PERFORMANCE | - |
dc.subject.keywordPlus | FORCE-GENERATION | - |
dc.subject.keywordPlus | MECHANISMS | - |
dc.subject.keywordPlus | DROSOPHILA | - |
dc.subject.keywordPlus | AIRFOIL | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | FLOWS | - |
dc.subject.keywordPlus | WINGS | - |
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