Effect of blunt trailing edge on rotor broadband noise
Effect of blunt trailing edge on rotor broadband noise
- Neue Suche nach: Chou, S.-T.
- Neue Suche nach: George, A. R.
- Neue Suche nach: Chou, S.-T.
- Neue Suche nach: George, A. R.
The production of high-frequency broadband noise by turbulent vortex shedding from rotor blades with blunt trailing edges is investigated analytically. The derivation of the governing equations, analogous to that of Kim and George (1982) for boundary-layer/trailing-edge noise, is explained, and numerical results are compared with the experimental data of Hubbard et al. (1981) and Lowson et al. (1972) in graphs. It is shown that vortex-shedding noise is a significant component of blunt-trailing-edge rotor broadband noise and that the analytical method employed gives reasonable predictions. The need for a better empirical expression for the normalized spectrum and for more measurements of surface pressure fluctuations near blunt trailing edges is indicated.
Dokumentinformationen
Effect of blunt trailing edge on rotor broadband noise
AIAA Journal ; 24
1986-08-01
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Englisch
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