Hydrodynamic advantages of a low aspect-ratio flapping foil
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jeongsu | - |
dc.contributor.author | Park, Yong-Jai | - |
dc.contributor.author | Cho, Kyu-Jin | - |
dc.contributor.author | Kim, Daegyoum | - |
dc.contributor.author | Kim, Ho-Young | - |
dc.date.accessioned | 2022-04-05T00:40:07Z | - |
dc.date.available | 2022-04-05T00:40:07Z | - |
dc.date.created | 2022-04-05 | - |
dc.date.issued | 2017-05 | - |
dc.identifier.issn | 0889-9746 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/83900 | - |
dc.description.abstract | A high aspect-ratio foil is known to be advantageous in terms of both thrust and efficiency in flapping propulsion. However, many species of fish have evolved a low aspect-ratio hydrofoil, which naturally leads one to search for its physical advantages in locomotion. Here we study the flow physics of a hydrofoil in angular reciprocating motion with negligible free-stream velocity to reveal the effects of an aspect ratio on hydrodynamic performance. By establishing a scaling law for the thrust of a foil of general shapes and corroborating it experimentally, we find that the thrust of an angularly reciprocating foil is maximized at a low aspect ratio of 0.7 while hydromechanical efficiency continuously increases with an aspect ratio. This result suggests that a low aspect-ratio foil can improve thrust produced by the foil when they start from rest, but at the expense of efficiency. (C) 2017 Elsevier Ltd. All rights reserved. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD | - |
dc.relation.isPartOf | JOURNAL OF FLUIDS AND STRUCTURES | - |
dc.title | Hydrodynamic advantages of a low aspect-ratio flapping foil | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000404698600005 | - |
dc.identifier.doi | 10.1016/j.jfluidstructs.2017.03.006 | - |
dc.identifier.bibliographicCitation | JOURNAL OF FLUIDS AND STRUCTURES, v.71, pp.70 - 77 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85017536040 | - |
dc.citation.endPage | 77 | - |
dc.citation.startPage | 70 | - |
dc.citation.title | JOURNAL OF FLUIDS AND STRUCTURES | - |
dc.citation.volume | 71 | - |
dc.contributor.affiliatedAuthor | Lee, Jeongsu | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | Aquatic locomotion | - |
dc.subject.keywordAuthor | Caudal fin | - |
dc.subject.keywordAuthor | Vortical structure | - |
dc.subject.keywordAuthor | Flapping | - |
dc.subject.keywordAuthor | Propulsion | - |
dc.subject.keywordPlus | TAIL SWIMMING PROPULSION | - |
dc.subject.keywordPlus | THRUST PERFORMANCE | - |
dc.subject.keywordPlus | VORTEX FORMATION | - |
dc.subject.keywordPlus | PITCHING PANEL | - |
dc.subject.keywordPlus | CAUDAL FIN | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | FLOW | - |
dc.subject.keywordPlus | WAKE | - |
dc.subject.keywordPlus | HYDROMECHANICS | - |
dc.subject.keywordPlus | LOCOMOTION | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Mechanics | - |
dc.relation.journalWebOfScienceCategory | Engineering, Mechanical | - |
dc.relation.journalWebOfScienceCategory | Mechanics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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