A Lagrangian vortex-lattice method for arbitrary bodies interacting with a linearized semi-Lagrangian free surface

Article type: Research Article

Authors: Liut, Daniel A. | Lin, Woei-Min

Affiliations: SAIC Ship Technology Division, Annapolis, MD, USA

Note: [] Corresponding author. E-mail: [email protected].

Abstract: A Lagrangian vortex-lattice approach is presented, through which bodies of arbitrary shape, wakes shedding from them, and a free surface can be modeled using sheets of concentrated vorticity. The method accounts for a full interaction of all vortex sheets in the time domain. A damping beach is used on the external boundaries of the free-surface domain. Multiple time-step computations combined with a versatile gridding approach make the current numerical implementation suitable for solving a wide variety of hydrodynamic and low-speed aerodynamic problems. Several examples and comparisons with experimental data are presented.

Journal: International Shipbuilding Progress, vol. 53, no. 1, pp. 1-32, 2006