16. S modeling

16.1. Characteristics of modeling

Formulation pressure elements PLAN “ACOUSTIQUE”

Divide =	30	meshes TRIA3selon the \(x\) axis
	4	meshes TRIA3selon the \(y\) axis

Boundary conditions:
	VITE_FACE:	(group_MA: Input	Vnor: 0.014)
	IMPE_FACE:	(group_MA: Output	Impe: 445.9)

Node name

\(A=\mathrm{No1}\)

\(B=\mathrm{No237}\)

\(C=\mathrm{No2}\)

\(D=\mathrm{No205}\)

16.2. Characteristics of the mesh

Number of knots:	155
Number of meshes and types:	240 TRIA38 SEG2

16.3. Tested values

Location	Sizes	Reference	Tolerance
\(A\)	\(p(\mathrm{réel})\)	—6.2426	1.0%
	\(p(\mathrm{imag})\)	0.0000	1.0%
	Sound Intensity (real)	0.0437	3.0%
	Sound Intensity (image)	0	6.0E-3
\(B\)	\(p(\mathrm{réel})\)	—6.2426	0.1%
	\(p(\mathrm{imag})\)	0.0000	0.1%
	Sound Intensity (real)	0.0437	2.5%
	Sound Intensity (image)	0	6.5E-3
\(C\)	\(p(\mathrm{réel})\)	6.0237	7%
	\(p(\mathrm{imag})\)	1.6387	7%
	Sound Intensity (real)	0.04037	1.0%
	Sound Intensity (image)	0	7.0E-3
\(D\)	\(p(\mathrm{réel})\)	6.0237	6%
	\(p(\mathrm{imag})\)	1.6387	6%
	Sound Intensity (real)	0.0437	2.5%
	Sound Intensity (image)	0	7.0E-3