STUDY ON HYDRODYNAMICS COEFFICIENTS OF SWATH AUTONOMOUS SURFACE VEHICLES (ASV) HULLFORM FOR BATHYMETRY SURVEY ACTIVITIES

Abstract

In this study, numerical modeling and simulation of an Autonomous Surface Vehicles (ASV) using Small Waterplane Area Twin Hull (SWATH) Hullform are shown. The paper emphasizes on the estimation of maneuvering performance of the ASV hullform which is needed to model the hydrostatic behavior, added mass of ASV, hydrodynamic characteristics and control surface forces and moments. The systematic computational fluid dynamic modeling was made to estimate the hydrodynamics forces of the submerged body of the SWATH Hullform. From initial design and prototype testing, a numerical analysis using computational fluid dynamics simulation is used to estimate the hydrodynamics coefficients in order to determine the control of maneuvering system of the SWATH Hullform. The various angles of attack will be considered to obtain the drag, lift and moment coefficients. The developed computational method is able to determine the hydrodynamic coefficients of SWATH Hullform for Autonomous Surface Vehicles (SWATH-ASV).