1. Broadband trailing edge noise from a sharp-edged strut.
- Author
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Moreau, Danielle J., Brooks, Laura A., and Doolan, Con J.
- Subjects
- *
BROADBAND amplifiers , *NOISE , *REYNOLDS number , *FLUCTUATIONS (Physics) , *SPEED - Abstract
This paper presents experimental data concerning the flow and noise generated by a sharp-edged flat plate at low-to-moderate Reynolds number (Reynolds number based on chord of 2.0 × 105 to 5.0 × 105). The data are used to evaluate a variety of semi-empirical trailing edge noise prediction methods. All were found to under-predict noise at lower frequencies. Examination of the velocity spectra in the near wake reveals that there are energetic velocity fluctuations at low frequency about the trailing edge. A semi-empirical model of the surface pressure spectrum is derived for predicting the trailing edge noise at low-to-moderate Reynolds number. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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