Fluid–Structure Interaction

Intensifying competition, increasing government regulations and more aggressive cost targets are pushing product designs to the edge of what’s possible, eroding the boundaries between different physical domains. One result is that it often is no longer possible to ignore the interactions between fluids and the structures that surround them. That’s why fluid–structure interaction (FSI) is important. When FSI occurs, fluid flow deforms a physical structure, which in turn changes the fluid flow. This two-way interaction loop continues through multiple cycles, possibly resulting in structural damage and less-than-optimal flow. Traditional fluid flow simulation doesn’t account for this interaction, so simulation results may be incomplete and even misleading. The resulting prototype won’t perform as expected, and an expensive and time-consuming redesign will be necessary.

ANSYS makes it easy to predict the interactions between fluids and structures, enabling engineers to optimize the behavior of complex products with the highest fidelity. Accurate simulation of the fluid–structure interface can enable your engineering team to dive deeper to get a better understanding of your product’s behavior. Interaction with structures is a critical computational fluid dynamics (CFD) app you have to get right.

Accurately assess wing performance by calculating flow around the wing and transferring the pressure loads to solve structural and mesh deformation by coupling ANSYS CFD and Mechanical.

Coupling of ANSYS CFD and Mechanical can quickly and accurately predict a blade flutter analysis to ensure the mechanical vibration will be damped out at natural frequencies by the aerodynamic loads.

Simulating the two-phase flow of liquid and air to accurately predict container wall deformation by coupling ANSYS CFD and Mechanical. Courtesy Tetra Pak