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

dc.contributor.author Agrawal, Bharat
dc.contributor.author Sharma, Anupam
dc.contributor.department Aerospace Engineering
dc.date 2018-10-19T22:19:23.000
dc.date.accessioned 2020-06-29T22:44:55Z
dc.date.available 2020-06-29T22:44:55Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.embargo 2017-11-08
dc.date.issued 2016-01-01
dc.description.abstract <p>Simplified representations of the leading edge serrations in owl feathers are modeled numerically to investigate their effectiveness in reducing inflow turbulence noise. The rod wake-airfoil interaction problem is selected for this investigation. Two numerical methods utilizing compressible- and incompressible large eddy simulation techniques are used for the analyses. The methods are first validated against experimental results for the baseline airfoil (no serrations). Good agreement is observed between measurement and predictions for mean surface pressure, near-field velocity spectra, and far-field sound spectra. Two serrated leading edge blade designs are then analyzed for noise. The leading edge serrations are found to give a noise reduction of up to 5 decibels in the mid-to-high frequency range.</p>
dc.description.comments <p>This is manuscript of a proceeding published as Bharat R. Agrawal and Anupam Sharma. (2016) "Numerical Investigations of Bio-Inspired Blade Designs to Reduce Broadband Noise in Aircraft Engines and Wind Turbines," <em>54th AIAA Aerospace Sciences Meeting, AIAA SciTech Forum. </em>(AIAA 2016-0760). DOI: <a href="https://dx.doi.org/10.2514/6.2016-0760" target="_blank">10.2514/6.2016-0760</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_conf/28/
dc.identifier.articleid 1027
dc.identifier.contextkey 11014893
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_conf/28
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1905
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_conf/28/2016_SharmaAnupam_NumericalInvestigationsBioInspired.pdf|||Fri Jan 14 23:09:36 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/aere_conf/28/2016_Sharma_NumericalInvestigationsBio.pdf|||Tue Jan 16 01:00:49 UTC 2018
dc.source.uri 10.2514/6.2016-0760
dc.subject.disciplines Aerodynamics and Fluid Mechanics
dc.subject.disciplines Aerospace Engineering
dc.subject.disciplines Computational Engineering
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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