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Table 3
Mesh properties for convergence study. The approximate wavelength λ is evaluated at f = 200 Hz. The λ/6-mesh is used for further evaluations.
| Mesh | Approx. elem. size (m) |
# elements |
Elem. total | Wall time | RAM (MB) |
|
||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ωair,1 | Ωabs,1 | Ωabs,2 | Ωair,1 | Ωabs,1 | Ωabs,2 | |||||
| λ/3 | 0.500 | 0.12 | 0.12 | 2023 | 1050 | 1050 | 4123 | 4 m 47 s | 2093 | 1.32 × 10−3 |
| λ/6 | 0.250 | 0.06 | 0.06 | 15,708 | 6255 | 6255 | 28,210 | 32 m 37 s | 3256 | 8.67 × 10−5 |
| λ/9 | 0.167 | 0.04 | 0.04 | 53,550 | 21,109 | 21,109 | 95,768 | 2 h 1 m 26 s | 7266 | 1.53 × 10−5 |
| λ/12 | 0.125 | 0.03 | 0.03 | 124,821 | 50,040 | 50,040 | 224,901 | 5 h 6 m 53 s | 16,190 | 4.48 × 10−6 |
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