Table 1 Properties of the materials used in the simulations of the device design
| Â | Water (8% air) | Water (2% air) | PVC | Silicone rubber |
|---|---|---|---|---|
Density (kg/m3) | 998 | 998 | 1760 | 1250 |
Speed of sound (m/s) | 1498 | 1498 | 1060 | 1460 |
Attenuation (dB/cm) | 0.0351 | 0.0092 | 1.1200 | 0.0875 |