Open Access
Table 2
List of considered numerical parameters.
| Variable | Symbol | Value |
|---|---|---|
| Interpolation order | IO | Linear and Quadratic |
| Location of input modes | l IM | Line from (x = 0, y = 0) to (0.085 m, 0) |
| Wall angle | α | 30° and 5° |
| Wall thickness | r w | rt/5 and rt/10 |
| Elements per smallest wavelength | N e | 3.4, 6.5, and 12.1 |
| Element shape | ES | Triangular and Quadrangular |
| Length of acoustic fluid behind lIM |
|
0.906 m and 0.0 m |
| Duct length in the numerical simulations |
|
0.396 m and 1.302 m |
| Length of acoustic fluid in front of duct lip |
|
0.604 m |
| Length of acoustic fluid above the duct wall |
|
0.906 m and 1.302 m |
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