Discretization
==============


Degrees of freedom
-----------------


.. csv-table::

    "**Modeling**", "**Degrees of freedom (at each vertex node)**"



.. csv-table::

    "3D_ FLUI_ABSO "," PRES: pressure"
    "", "PHI: fluid displacement potential"



Support mesh for stiffness matrices
------------------------

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


.. csv-table::

    "**Modeling**", "**Mesh**", "**Interpolation**", "**Remarks**"



.. csv-table::

    "3D_ FLUI_ABSO "," TRIA3 ", "linear", ""
    "", "TRIA6 ", "quadratic", ""
    "", "QUAD4 ", "linear", ""
    "", "QUAD8
    QUAD9 ", "quadratic", ""



Cargo support mesh
------------------------------

The same as before.