3. Modeling A#

3.1. Characteristics of modeling#

Pressure-potential formulation \((u,p,\phi )\) on “3D_ FLUIDE “elements. The output impedance is defined by a 3D_ FLUI_ABSO model applied (option IMPE_MECA) to the GROUP_MA =” SORTIE “.

_images/1000169A00002B3400000C67B87C5BA960AB5AA5.svg

Boundary condition:

ONDE_FLUI: (GROUP_MA ='Entry', PRES =1.0)

3.2. Characteristics of the mesh#

Number of nodes:

471

Number of meshes and types:

60 HEXA20

3.3. Tested values#

Location

Sizes

Reference

PRECISION

\(A\)

\(p\) (real)

\(p\) (picture)

0.5 0.0

1.0E-3

\(B\)

\(p\) (real)

\(p\) (picture)

0.5 0.0

1.0E-3

\(C\)

\(p\) (real)

\(p\) (picture)

—0.482466 —0.131252

1.0E-3

\(D\)

\(p\) (real)

\(p\) (picture)

—0.482466 —0.131252

1.0E-3