Numerical Investigations of Bio-Inspired Blade Designs to Reduce Broadband Noise in Aircraft Engines and Wind Turbines

dc.contributor.author Bodling, Andrew
dc.contributor.author Agrawal, Bharat
dc.contributor.author Sharma, Anupam
dc.contributor.author Clark, Ian
dc.contributor.author Alexander, W. Nathan
dc.contributor.author Devenport, William
dc.contributor.department Aerospace Engineering
dc.date 2018-10-19T23:11:25.000
dc.date.accessioned 2020-06-29T22:45:01Z
dc.date.available 2020-06-29T22:45:01Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2017
dc.date.embargo 2018-10-18
dc.date.issued 2017-01-01
dc.description.abstract <p>This paper numerically models an airfoil geometry inspired by the downy coat of the barn owl and contrasts its aerodynamic and aeroacoustic performance with the baseline airfoil. <em>Implicit</em> large eddy simulations are performed with the Navier Stokes solver FDL3DI. A baseline NACA 0012 airfoil is compared against the same model with an array of fences at the trailing edge. Both models were simulated at a Reynolds number of 3 × 10<sup>5</sup>, flow mach number of 0.2 and angle of attack of 3 degrees.</p> <p>The fences are shown to reduce the sound spectra in the high frequencies by up to 1.8 dB at the airfoil trailing edge. Spanwise correlations show a reduction in coherence length, especially at low frequencies, with the fences. The simulation results agree with the experiments in that the fence spacing is an important design parameter.</p>
dc.description.comments <p>This is a manuscript of a proceeding published as Bodling, Andrew, Bharat R. Agrawal, Anupam Sharma, Ian Clark, William N. Alexander, and William J. Devenport. 2017. "Numerical Investigations of Bio-Inspired Blade Designs to Reduce Broadband Noise in Aircraft Engines and Wind Turbines." 55th AIAA Aerospace Sciences Meeting, AIAA SciTech Forum, (AIAA 2017-0458). DOI: <a href="https://dx.doi.org/10.2514/6.2017-0458" target="_blank">10.2514/6.2017-0458</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_conf/40/
dc.identifier.articleid 1039
dc.identifier.contextkey 13118154
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_conf/40
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1919
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_conf/40/2017_SharmaAnupam_NumericalInvestigations.pdf|||Sat Jan 15 00:07:35 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/aere_conf/40/2017_SharmaAnupam_NumericalInvestigationsBioInspired.pdf|||Fri Oct 19 04:03:43 UTC 2018
dc.source.uri 10.2514/6.2017-0458
dc.subject.disciplines Aerodynamics and Fluid Mechanics
dc.subject.disciplines Structures and Materials
dc.title Numerical Investigations of Bio-Inspired Blade Designs to Reduce Broadband Noise in Aircraft Engines and Wind Turbines
dc.type article
dc.type.genre conference
dspace.entity.type Publication
relation.isAuthorOfPublication 9797e35d-08ee-41c7-8982-c83e6db2ed8e
relation.isOrgUnitOfPublication 047b23ca-7bd7-4194-b084-c4181d33d95d
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