Author(s)

C. Haack, V. Schlegel & 0. Mahrenholtz

Abstract

The interaction of nonlinear gravity waves with fixed and floating structures C. Haack, V. Schlegel, 0. Mahrenholtz Ocean Engineering Section II, Technical University Hamburg-Harburg, D-2100 Hamburg 90, Germany ABSTRACT The paper presents the formulation of a numerical wave channel (NWC) for the investigation of the dynamics of free floating bodies in nonlinear gravity waves. A boundary element (BE) approach for two-dimensional configurations is introduced using cubic spline approximations for the free surface discretization and a double node concept for the modeling of contact points between structures and the fluid. The unknown time-dependent and nonlinear boundary conditions on the free surface are evaluated by a time- stepping procedure. In addition, this initial value problem is applicable to the equations of motion of free floating bodies. In this case the right hand sides are the external forces, calculated by integrating the pressure distri- bution on the submerged surfaces a

Keywords