4. Specificities of coupled fluid-structure problems

It is possible to use a coupled vibro-acoustic model in « DYNA_NON_LINE ». This model is based on a \((u,p,\varphi )\) approach with the following assumptions:

• the fluid is of linear acoustic type,

• the structure should be considered to be in small disturbances or in an updated Lagrangian.

Free surfaces subject to gravity (sloshing waves) can also be taken into account.

The documentation [U2.06.11] presents in detail the implementation of a coupled nonlinear fluid-structure model for a reservoir calculation. The note [bib5] _ analyzes the field of application of the coupled fluid-structure model.