Campus Units

Aerospace Engineering

Document Type

Conference Proceeding

Conference

54th AIAA Aerospace Sciences Meeting

Publication Version

Accepted Manuscript

Link to Published Version

https://doi.org/10.2514/6.2016-0760

Publication Date

2016

Journal or Book Title

54th AIAA Aerospace Sciences Meeting

First Page

2016-0760

DOI

10.2514/6.2016-0760

Conference Title

54th AIAA Aerospace Sciences Meeting

Conference Date

January 4-8, 2016

City

San Diego, CA

Abstract

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.

Comments

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," 54th AIAA Aerospace Sciences Meeting, AIAA SciTech Forum. (AIAA 2016-0760). DOI: 10.2514/6.2016-0760. Posted with permission.

Copyright Owner

Anupam Sharma

Language

en

File Format

application/pdf

Published Version

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Article Location

 
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