Research Article
Experiment and Simulation Analysis on Noise Attenuation of Al/MF Cylindrical Shells
Table 1
Acoustic parameters of MF.
| | Acoustic parameters | Value |
| | Flow resistivity/(Pa⋅s⋅m−2) | 10925 | | Sound speed/m⋅s−1 | 346 | | Air density/kg⋅m−3 | 1.185 | | Porosity | 0.99 | | Tortuosity | 1.02 | | Viscous characteristic length/mm | 0.1 | | Thermal characteristic length/mm | 0.13 |
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