Author(s)

J. Žán & J. Křen

Abstract

A computational method is developed to solve the coupled fluid-structure interaction problem, where the viscous incompressible fluid and a rigid body-spring system interact with each other. In order to incorporate the effect of the moving surface of the rigid body, the arbitrary Lagrangian-Eulerian formulation is employed as the basis of the finite element spatial discretization. The predictor-corrector method is then used for the time integration of the equations of the motion. 1 Introdution Many problems cannot be treated effectively with Lagrangian meshes. When the material is severely deformed, Lagrangian elements become similarly distorted since they deform with the material. The approximation accuracy of the elements then deteriorates, particularly for higher order elements. In some problems, Lagrangian methods are totally inappropriate. For example, in fluid mechanics with high v

Keywords