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- Publisher Website: 10.1007/978-3-642-40371-2_31
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Conference Paper: Sound Generated by a Wing with a Flap Interacting with a Passing Vortex
Title | Sound Generated by a Wing with a Flap Interacting with a Passing Vortex |
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Authors | |
Issue Date | 2014 |
Publisher | Springer International Publishing. |
Citation | The 2nd Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC), Hong Kong, 20-21 May and Macau, 22-23 May 2013. In Lecture Notes in Mechanical Engineering, 2014, p. 211-216 How to Cite? |
Abstract | We study the acoustic signature of a rigid wing, equipped with a movable downstream flap and interacting with a line vortex, in a two-dimensional low-Mach number flow. The flap is attached to the airfoil via a torsion spring, and the coupled nonlinear fluid–structure interaction problem is analyzed using thin-airfoil methodology and the Brown and Michael equation. Passage of the incident vortex above the airfoil initiates flap oscillations at the system natural frequency, amplified over all other frequencies excited by the vortex. Far-field sound radiation is analyzed, yielding the leading order dipole-type signature of the system. The acoustic radiation is dominated by vortex sound, consisting of relatively strong leading and trailing edge interactions of the airfoil with the incident vortex, together with late-time wake sound resulting from induced flap oscillations. In comparison with counterpart rigid (non-flapped) configuration, we find that the flap may act as sound amplifier or absorber, depending on the value of flap-fluid natural frequency. |
Description | This Book Series entitled: Fluid-Structure-Sound Interactions and Control: Proceedings of the 2nd Symposium on Fluid-Structure-Sound Interactions and Control |
Persistent Identifier | http://hdl.handle.net/10722/205261 |
ISSN | 2023 SCImago Journal Rankings: 0.167 |
DC Field | Value | Language |
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dc.contributor.author | Manela, A | en_US |
dc.contributor.author | Huang, L | en_US |
dc.date.accessioned | 2014-09-20T02:07:48Z | - |
dc.date.available | 2014-09-20T02:07:48Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | The 2nd Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC), Hong Kong, 20-21 May and Macau, 22-23 May 2013. In Lecture Notes in Mechanical Engineering, 2014, p. 211-216 | en_US |
dc.identifier.issn | 2195-4356 | - |
dc.identifier.uri | http://hdl.handle.net/10722/205261 | - |
dc.description | This Book Series entitled: Fluid-Structure-Sound Interactions and Control: Proceedings of the 2nd Symposium on Fluid-Structure-Sound Interactions and Control | - |
dc.description.abstract | We study the acoustic signature of a rigid wing, equipped with a movable downstream flap and interacting with a line vortex, in a two-dimensional low-Mach number flow. The flap is attached to the airfoil via a torsion spring, and the coupled nonlinear fluid–structure interaction problem is analyzed using thin-airfoil methodology and the Brown and Michael equation. Passage of the incident vortex above the airfoil initiates flap oscillations at the system natural frequency, amplified over all other frequencies excited by the vortex. Far-field sound radiation is analyzed, yielding the leading order dipole-type signature of the system. The acoustic radiation is dominated by vortex sound, consisting of relatively strong leading and trailing edge interactions of the airfoil with the incident vortex, together with late-time wake sound resulting from induced flap oscillations. In comparison with counterpart rigid (non-flapped) configuration, we find that the flap may act as sound amplifier or absorber, depending on the value of flap-fluid natural frequency. | - |
dc.language | eng | en_US |
dc.publisher | Springer International Publishing. | en_US |
dc.relation.ispartof | Lecture Notes in Mechanical Engineering | en_US |
dc.title | Sound Generated by a Wing with a Flap Interacting with a Passing Vortex | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Huang, L: lixi@hku.hk | en_US |
dc.identifier.authority | Huang, L=rp00119 | en_US |
dc.identifier.doi | 10.1007/978-3-642-40371-2_31 | - |
dc.identifier.scopus | eid_2-s2.0-84950996626 | - |
dc.identifier.hkuros | 237391 | en_US |
dc.identifier.spage | 211 | en_US |
dc.identifier.epage | 216 | en_US |
dc.publisher.place | Switzerland | - |
dc.identifier.issnl | 2195-4356 | - |