Skip to main content
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
1. R. Paterson, P. Vogt, and M. Fink, “Vortex noise of isolated airfoils,” J. Aircr. 10(5), 296302 (1973).
2. C. Tam, “Discrete tones of isolated airfoils,” J. Acoust. Soc. Am. 55(6), 11731177 (1974).
3. M. Fink, “Prediction of airfoil tone frequencies,” J. Aircr. 12(2), 118120 (1975).
4. R. Longhouse, “Vortex shedding noise of low tip speed, axial flow fans,” J. Sound Vib. 53, 2546 (1977).
5. H. Arbey and J. Bataille, “Noise generated by airfoil profiles placed in a uniform laminar flow,” J. Fluid Mech. 134, 3347 (1983).
6. E. Nash, M. Lowson, and A. McAlpine, “Boundary-layer instability noise on air foils,” J. Fluid Mech. 382, 2761 (1999).
7. A. McAlpine, E. Nash, and M. Lowson, “On the generation of discrete frequency tones by the flow around an airfoil,” J. Sound Vib. 222(5), 753779 (1999).
8. M. Kingan and J. Pearse, “Laminar boundary layer instability noise produced by an aerofoil,” J. Sound Vib. 322, 808828 (2009).
9. S. Wright, “The acoustic spectrum of axial flow machines,” J. Sound Vib. 45, 165223 (1976).
10. L. Jones, R. Sandberg, and N. Sandham, “Stability and receptivity characteristics of a laminar separation bubble on an aerofoil,” J. Fluid Mech. 648, 257296 (2010).
11. D. Moreau, M. Tetlow, L. Brooks, and C. Doolan, “Acoustic analysis of flat plate trailing edge noise,” in Proceedings of the 20th International Congress on Acoustics, ICA 2010, Paper No. 606 (2010).
12. M. Brendel and T. J. Mueller, “Boundary-layer measurements on an airfoil at low Reynolds numbers,” J. Aircr. 25, 612617 (1988).
13. S. Yarusevych, J. Kawall, and P. Sullivan, “Unsteady separated flow characterisation on airfoils using time-resolved surface pressure measurements,” AIAA J. 46(2), 508516 (2008).
14. S. Makiya, A. Inasawa, and M. Asai, “Vortex shedding noise and noise radiation from a slat trailing edge,” AIAA J. 48(2), 502509 (2010).
15. C. Lin, Theory of Hydrodynamic Stability (Cambridge University Press, Great Britain,1955), pp. 6768.
16. J. Ffowcs Williams and L. Hall, “Aerodynamic sound generation by turbulent flow in the vicinity of a scattering half plane,” J. Fluid Mech. 40, 657670 (1970).
17. M. Sunyach, H. Arbey, D. Robert, J. Bataille, and G. Comte-Bellot, “Correlations between far field acoustic pressure and flow characteristics for a single airfoil,” in Proceedings of the AGARD Conference No. 131, Noise Mechanisms, Paper No. 5 (1973).
18. L. Jones and R. Sandberg, “Numerical investigation of tonal airfoil self-noise generated by an acoustic feedback-loop,” in Proceedings of the 16th AIAA/CEAS Aeroacoustics Conference, Paper No. AIAA-2010-3701 (2010).

Data & Media loading...


Article metrics loading...



This letter presents an experimental study on the tonal noise generated by a sharp-edged flat plate at low-to-moderate Reynolds number. Flow and far-field noise data reveal that, in this particular case, the tonal noise appears to be governed by vortex shedding processes. Also related to the existence of the tonal noise is a region of separated flow slightly upstream of the trailing edge. Hydrodynamic fluctuations at selected vortex shedding frequencies are strongly amplified by the inflectional mean velocity profile in the separated shear layer. The amplified hydrodynamic fluctuations are diffracted by the trailing edge, producing strong tonal noise.


Full text loading...


Access Key

  • FFree Content
  • OAOpen Access Content
  • SSubscribed Content
  • TFree Trial Content
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd