Author(s)

A. Wardlaw, J.A. Luton, J. Renzi & K. Kiddy

Abstract

Fluid-structure coupling methodology for undersea weapons A. Wardlaw, J.A. Luton J. Renzi & K. Kiddy Naval Surface Warfare Center, Indian Head Division, USA Abstract Accurate prediction of underwater explosion damage to naval targets is an important aspect of weapon design. The stiffness of water makes ths a difficult problem; target deformation modifies the pressure in the surrounding fluid, changing the pressure loading. Thus, it is necessary to couple the fluid and structure simulations. This is accomplished by running both simulations as separate processes that communicate after each fluid integration step. The fluid solution is carried out on a fixed, Cartesian product grid, which does not coincide with the body surface. Geometry routines included in the Euler module determine which cells are in the fluid, in the structure and intersected by the structure surface. A modified stair-step boundary treatment that accounts for local surface motion and orientation represents the body surface wit

Keywords