1. Discretization#

1.1. Degrees of freedom#

Modeling

Degrees of freedom (at each vertex node)

3D_ FLUI_ABSO

PRES: pressure

PHI: fluid displacement potential

1.2. Support mesh for stiffness matrices#

The support meshes of the finite elements can be quadrangles or triangles. The elements are iso-parametric.

Modeling

Mesh

Interpolation

Remarks

3D_ FLUI_ABSO

TRIA3

linear

TRIA6

quadratic

QUAD4

linear

QUAD8 QUAD9

quadratic

1.3. Cargo support mesh#

The same as before.