1. Reference problem#
1.1. Geometry#
Rectangular tube:
length: |
\(L={l}_{x}=1.0m\) |
height: |
\(h={l}_{y}=0.1m\) |
width: |
\(l={l}_{z}=0.2m\) |
Coordinates of the points (in \(m\)):
\(A\) |
|
|
|
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\(x\) |
1.00 |
1.00 |
|||
\(y\) |
0.05 |
0.05 |
|||
\(z\) |
0.20 |
0.10 |
0.10 |
0.20 |
0.10 |
1.2. Material properties#
Air:
\({\rho }_{c}=1.3\mathrm{kg.}{m}^{-3}\)
\({c}_{0}=343.{\mathrm{m.s}}^{-1}\)
1.3. Boundary conditions and loading#
Normal input speed |
\(V\mathrm{=}{V}_{n}\mathrm{\times }\mathrm{exp}(i\omega t)\) with \({V}_{n}=0.014{\mathrm{m.s}}^{-1}\) |
\(f=500\mathrm{Hz}\) |
|
Impedance at the end \(\mathrm{CD}\) |
|