Modeling B: 2D case
=======================


Characteristics of modeling
-----------------------------------


.. csv-table::

    "Piston:", "PHENOMENE: 'MECANIQUE'"
    "", "MODELISATION: 'D_ PLAN'"



.. csv-table::

    "Fluid:", "PHENOMENE: 'MECANIQUE'"
    "", "MODELISATION: '2D_ FLUIDE'"



Characteristics of the mesh
----------------------------


.. image:: images/1000000000000418000001F20E683932B367A11A.png
    :width: 6.2661in
    :height: 2.7547in


.. _RefImage_1000000000000418000001F20E683932B367A11A.png:


.. csv-table::

    "Number of knots: 35", ""
    "Number of meshes and types:", "24 QUA4"
    "", "18 SEG2 (faces of QUA4)"



Tested values
---------------

The pressure values at nodes 7 and 10 are tested (see mesh). For node 10, we test the two maxima (compression and depression) and the return to rest. For node 7, we test the maximum compression.


* DYNA_VIBRA


.. csv-table::

    "**Node**", "**Instant (** :math:`s` **)**", "**Calculation with** **Code_Aster**
    **(Pressure in** :math:`\mathrm{Pa}` **)**"
    ":math:`\mathit{N10}` ", "3.86000E—01", "4.88962E+03"
    "", "6.37000E—01", "—4.93961E+03"
    "", "1.15600E+00", "0.434"
    ":math:`\mathit{N7}` ", "3.86000E—01", "4.89074E+03"



* DYNA_NON_LINE:


.. csv-table::

    "**Node**", "**Instant (** :math:`s` **)**", "**Calculation with** **Code_Aster**
    **(Pressure in** :math:`\mathrm{Pa}` **)**"
    ":math:`\mathit{N10}` ", "3.84000E—01", "4.87451E+03"
    "", "6.44000E—01", "—4.88583E+03"
    "", "1.09400E+00", "3.1"
    ":math:`\mathit{N7}` ", "3.84000E—01", "4.88877E+03"