u2.06.14 Tips for implementing Fluid-Structure Interaction calculations

Summary

This document provides an overview of the various approaches available in Code_Aster to model the effects of fluid-structure interaction in structural vibration analyses. It also summarizes a number of practical tips and precautions to take when performing Fluid-Structure Interaction calculations.

• 1. Fluid forces acting on a vibrating structure
• 2. Modeling fluid-elastic forces
  • 2.1. The « potential » approach for calculating the modal base of a coupled system
  • 2.2. The « predefined configuration » approach for calculating the modal base of a coupled system
  • 2.3. Vibratory analyses following the obtaining of the modal base of the coupled system
• 3. Modeling the forces independent of the movement of the structure
• 4. Vibratory analysis of a wet structure: spectral approach
• 5. Vibratory analysis of a wet structure: temporal approach
  • 5.1. Practical tips for use