dc.creator | Ayton, Lorna Jane | |
dc.date.accessioned | 2018-11-24T23:18:31Z | |
dc.date.available | 2016-01-22T10:48:05Z | |
dc.date.available | 2018-11-24T23:18:31Z | |
dc.date.issued | 2016-02-24 | |
dc.identifier | https://www.repository.cam.ac.uk/handle/1810/253416 | |
dc.identifier.uri | http://repository.aust.edu.ng/xmlui/handle/123456789/3294 | |
dc.description.abstract | The scattering of sound by a finite rigid plate with a finite poroelastic extension interacting with an unsteady acoustic source is investigated to determine the effects of porosity, elasticity, and the length of the extension when compared to a purely rigid plate. The problem is solved using the Wiener-Hopf technique, and an approximate Wiener-Hopf factorisation process is implemented to yield reliable far-field results quickly. Importantly, finite chord-length effects are taken into account, principally the interaction of a rigid leading-edge acoustic field with a poroelastic trailing-edge acoustic field. The model presented discusses how the poroelastic trailing-edge property of owls’ wings could inspire quieter aeroacoustic designs in bladed systems such as wind turbines, and provides a framework for analysing the potential noise reduction of these designs. | |
dc.language | en | |
dc.publisher | Cambridge University Press | |
dc.publisher | Journal of Fluid Mechanics | |
dc.title | Acoustic Scattering by a Finite Rigid Plate with a Poroelastic Extension | |
dc.type | Article | |