FSI | CD-adapco
Easy-to-use, robust FSI solutions with coupling to leading FEA tools
Fluid-Structure Interactions (FSI) is the study of thermo-mechanical interactions of a fluid and a solid structure. It mostly concerns dynamic fluid-body interaction (DBFI) or fluid analysis on a deformable body for stress.
  • Flexible wing : Use of high fidelity computational aeroelasticity is critical to tomorrow's design challenges, driving innovation and resulting in engineering success. STAR-CCM+, with a direct link to Abaqus FEA for co-simulation, seamlessly integrates computational aeroelasticity into the design process.
  • Pressure distribution on airplane wing and body. (FSI)

There are two distinct categories of FSI:

One-way interactions, in which the fluid will impart some action on the structure, but the response of the structure does little affect the fluid motion, and Two-way interactions, where the fluid motion and pressure affects the displacement and deformation of the structure and, in turn, the structure has a significant effect on the fluid flow. An example of One-way interactions would be where a fluid heats or cools a stiff, supported structure which produces thermals tress loads and deformations in the solid, while an example of Two-way interactions, the solid structure responds to pressure or viscous shear traction in the fluid, while the fluid responds, especially from the velocity of the structure.

STAR-CCM+ uses implicit coupling to handle FSI cases, as well as Dynamic Mesh Evolution techniques such as Rigid Body Motion and Mesh Morphing techniques. FSI handled entirely in STAR-CCM+ without the need of any external software or modules, and can be controlled via Java macros to map and export fluid dynamic loads for use in a structural solver, such as our partner software ABAQUS.

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