.. _R4.07.04:

**r4.07.04** Fluid-structure coupling for tubular structures and coaxial shells
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**Summary:**

This document describes the various fluid-structure coupling models available using operator CALC_FLUI_STRU. These models make it possible to simulate fluid-elastic coupling forces in the following configurations:


* bundles of tubes under transverse flow (mainly for GV tubes),


* control rod passage/housing plate (exclusively for control clusters),


* coaxial cylindrical shells under annular flow (tank space/core envelope), ... ),


* bundles of tubes under axial flow (fuel assemblies,...).

For each configuration, the fluid-elastic forces model is first presented. The resolution of the modal problem is then described. The resolution methods used integrate the specificities of the various fluid-elastic force models.


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    :maxdepth: 2
    :numbered:

    Pr_sentation_g_n_rale
    Excitation_fluide-_lastique_agissant_sur_les_faisceaux_de_tubes_sous__coulement_transverse__essentiellement_pour_les_tubes_de_GV_
    Excitation_fluide-_lastique_agissant_sur_la_tige_de_commande_au_niveau_de_la_plaque_de_logement__exclusivement_pour_les_grappes_de_commande_
    Excitation_fluide-_lastique_agissant_sur_deux_coques_cylindriques_coaxiales_sous__coulement_annulaire__exemple___espace_cuve___enveloppe_de_c_ur_

    _coulement_axial__exemple___assemblages_combustibles_
    1
    Bibliographie
    Description_des_versions_du_document