A Strong Coupling Scheme For Fluid-StructureInteraction Problems With Dynamically Moving Boundaries In Viscous Incompressible Flows.

Abstract

In the present paper an embedded-boundary formulation that is applicable to fluid
structure interaction problems is presented. The Navier-Stokes equations for incompressible
flow are solved on a fixed grid which is not aligned with the body. A corotational formulation
is used to describe the dynamics of a body that moves through the fixed grid undergoing
large-angle/large-displacement rigid body motions. A strong coupling scheme is adopted,
where the fluid and the structure are treated as elements of a single dynamical system, and all
of the governing equations are integrated simultaneously and interactively in the timedomain.
A demonstration of the accuracy and efficiency of the method will be given for a
variety of fluid/structure interaction problems.