.. _R4.02.04: **r4.02.04** Fluid Coupling - Structure with Free Surface ============================================================ **Summary:** The fluid/structure coupling is presented here in the case where the fluid has a free surface. Free surface elements have been implanted in*Code_Aster* to calculate the swaying modes of a fluid coupled to an elastic structure for a three-dimensional problem. **Table of Contents** .. toctree:: :hidden: self .. toctree:: :maxdepth: 2 :numbered: Notations Introduction Formulation_th_orique_du_probl_me Implantation_dans_Code_Aster Bibliographie Description_des_versions_du_document