14. Q modeling

14.1. Characteristics of modeling

Formulation pressure elements PLAN “ACOUSTIQUE”

Divide =	30	meshes QUAD4selon the \(x\) axis
	4	meshes QUAD4selon the \(y\) axis

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

Node name

\(A=\mathrm{No1}\)

\(B=\mathrm{No237}\)

\(C=\mathrm{No2}\)

\(D=\mathrm{No205}\)

14.2. Characteristics of the mesh

Number of knots:	155
Number of meshes and types:	120 QUAD88 SEG2

14.3. Tested values

Location	Sizes	Reference	Tolerance
\(A\)	\(p(\mathrm{réel})\)	—6.2426	0.3%
	\(p(\mathrm{imag})\)	0.0000	0.3%
	Sound Intensity (real)	0.0437	1.5%
	Sound Intensity (image)	0	6.5E-3
\(B\)	\(p(\mathrm{réel})\)	—6.2426	0.3%
	\(p(\mathrm{imag})\)	0.0000	0.3%
	Sound Intensity (real)	0.0437	1.5%
	Sound Intensity (image)	0	6.5E-3
\(C\)	\(p(\mathrm{réel})\)	6.0237	4%
	\(p(\mathrm{imag})\)	1.6387	4%
	Sound Intensity (real)	0.04037	1.5%
	Sound Intensity (image)	0	6.6E-4
\(D\)	\(p(\mathrm{réel})\)	6.0237	4%
	\(p(\mathrm{imag})\)	1.6387	4%
	Sound Intensity (real)	0.0437	1.5%
	Sound Intensity (image)	0	6.6E-3