Table 3.
Summary of non-acoustic parameters for each sample.
| Sample Code | Bulk Density, ρ | Porosity, N | Measured Tortuosity, τ | Estimated Tortuosity, τest | Air Flow Resistivity, σ | Thermal Conductivity, λ |
|---|---|---|---|---|---|---|
| [kg/m3] | [-] | [-] | [-] | [kN·s/m4] | [W/(m·K)] | |
| CH-1 | 197(1.7) | 0.86(0.002) | 1.23(0.07) | 1.08(0.0028) | 66.3(7.8) | 0.060(0.0005) |
| CH-2 | 145(1.6) | 0.89(0.001) | 1.11(0.05) | 1.06(0.0008) | 46.0(9.1) | 0.055(0.0007) |
| CH-3 | 122(1.2) | 0.91(0.001) | 1.12(0.05) | 1.05(0.0013) | 16.5(2.7) | 0.052(0.0006) |
| CH-4 | 80(1.0) | 0.94(0.001) | 1.20(0.18) | 1.03(0.0016) | 11.7(2.2) | 0.049(0.0005) |
| GA-1 | 177(2.9) | 0.87(0.0014) | - | 1.08(0.0019) | 44.7(5.0) | 0.059(0.0012) |
| GA-2 | 143(1.6) | 0.90(0.0003) | - | 1.06(0.0004) | 23.6(2.5) | 0.056(0.0006) |
| GA-3 | 93(1.1) | 0.93(0.0004) | - | 1.04(0.0006) | 14.4(2.3) | 0.050(0.0005) |