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Design of Flapping Airfoil for Optimal Aerodynamic Performance in Low-Reynolds Number Flows
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jung-Sang | - |
dc.contributor.author | Kim, Chongam | - |
dc.contributor.author | Kim, Kyu Hong | - |
dc.date.accessioned | 2009-08-11T04:35:45Z | - |
dc.date.available | 2009-08-11T04:35:45Z | - |
dc.date.issued | 2006-09 | - |
dc.identifier.citation | AIAA Journal, vol. 44, no. 9 , 2006, pp. 1960-1972 | en |
dc.identifier.issn | 0001-1452 | - |
dc.identifier.uri | https://hdl.handle.net/10371/6925 | - |
dc.description.abstract | Unsteady, viscous, incompressible flows over an airfoil under flapping motion are numerically investigated. Depending on key parameters such as Reynolds number, reduced frequency, and flapping amplitudes, a flapping airfoil could experience complex flow fields. The trailing-edge vortex plays an important role to induce inverse Kármán-vortex street which is a jetlike flow on the downstream and then generates thrust. And, the leading-edge separation vortex is closely related on the propulsive efficiency. Through careful computations of several pitching, plunging, and plunging combined with pitching modes in terms of flow and/or geometry parameters, the key physical flow phenomenon dictating the aerodynamic characteristics of flapping airfoil is identified. Based on the analysis of thrust coefficient and propulsive efficiency a new airfoil shape for optimal aerodynamic performance is proposed. The improved performance of the new flapping airfoil is validated in terms of thrust coefficient and propulsive efficiency in various low-Reynolds number flow regimes. | en |
dc.description.sponsorship | The authors appreciate the financial support by the Basic Research
Program of the Korea Science & Engineering Foundation (Grant No. R01-2002-000-00329-0), and by the Brain Korea-21 Program for the Mechanical and Aerospace Engineering at Seoul National University. | en |
dc.language.iso | en | - |
dc.publisher | American Institute of Aeronautics and Astronautics | en |
dc.title | Design of Flapping Airfoil for Optimal Aerodynamic Performance in Low-Reynolds Number Flows | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 김종암 | - |
dc.contributor.AlternativeAuthor | 김규홍 | - |
dc.identifier.doi | 10.2514/1.15981 | - |
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