A strong coupling scheme for fluid-structure interaction problems with dynamically moving boundaries in viscous incompressible flows

J. YANG; SERGIO PREIDIKMAN; E. BALARAS

Buenos Aires

Congreso; MECOM 2005 - VIII Congreso Argentino de Mecánica Computacional; 2005

AMCA - Asociación Argentina de Mecánica Computacional

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 time domain. A demonstration of the accuracy and efficiency of the method will be given for a variety of fluid/structure interaction problems.