.. _V8.01.108:

**v8.01.108** FDLV108 - Calculation of damping added in annular flow (variable density)
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**Summary:**

This fluid-structure test involves calculating the mass and damping added to a cylindrical structure subjected to an annular flow that is assumed to be potential. Mass and damping added by the flow on the structure are calculated for an upstream speed of :math:`4{\mathrm{m.s}}^{-1}`, on a 3D model for the fluid and shell for the structure. The structure has a rotational movement around a pivot located at the downstream end of the cylinder with respect to the flow. The advantage of the test lies in taking into account a fluid domain with a density of **not homogeneous**.


.. toctree::
    :hidden:

    self

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

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Synth_se_des_r_sultats