Research Article
Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow Dynamics
Table 7
Comparison of sound pressure levels for the most effective cases and the baseline.
| | Method | Bottom wall average SPL (dB) | % reduction | LE wall average SPL (dB) | % reduction | TE wall average SPL (dB) | % reduction |
| | Baseline | 162.6 | — | 161.2 | — | 170.4 | — | | CP 4 | 147.3 | 9.4 | 145.4 | 9.8 | 153.8 | 9.7 | | TWM 3 | 131.4 | 19.2 | 130.8 | 18.9 | 138.0 | 19.0 | | TC 4 | 141.2 | 13.2 | 135.4 | 16.0 | 150.3 | 11.8 | | JB1 | 160.2 | 1.5 | 156.7 | 2.8 | 168.3 | 1.2 |
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