.. _V8.01.100:

**v8.01.100** FDLV100 - Piston coupled to an incompressible fluid column
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**Summary:**

This test in the field of fluids (fluid-structure coupling) validates the calculation of added mass on a modal basis and performs, as part of a modal analysis, the calculation of the natural frequency of a piston-spring system coupled to a column of incompressible fluid. To model the fluid, plane thermal elements are used; to model the piston, 2D mechanical elements in plane deformation and a discrete element are used to model a spring. Finally, the fluid/structure interface is modelled by thermal linear elements modified to introduce an "acceleration" type boundary condition into the fluid. The test case includes only one model, two-dimensional. The natural frequency of the coupled system is found to be 0.01% of the analytical result.


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    R_sultats_de_la_mod_lisation_A