Abstract
This paper investigates the feasibility of applying a feedforward active control strategy for reducing gust/cascade interaction noise via an inversion technique. The basic scenario is to cancel the interaction noise through the introduction of secondary sources distributing on cascade surfaces. The intensity of the secondary sources is obtained based on a gust/cascade aeroacoustic inversion model. Numerical study reveals the feasibility of embedding dipole secondary sources on cascade surfaces. In addition, the optimal distribution is also investigated for alleviating the sacrifice of aerodynamic performance.
| Original language | English |
|---|---|
| Pages (from-to) | 237-241 |
| Number of pages | 5 |
| Journal | Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica |
| Volume | 24 |
| Issue number | 3 |
| State | Published - May 2003 |
Keywords
- Active control
- Feedforward
- Gust/cascade interaction
- Inverse problem
- Secondary source
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