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Publications
Sutulo, S. and Guedes Soares, C., (2009), “Simulation of Close-Proximity Manoeuvers using an Online 3D Potential Flow Method”, International conference on Marine Simulation and Ship Manoeuvrability MARSIM, Panama City, Panama
Hydrodynamic interaction forces can be significant for ships operating in close-proximity to other ships or another obstacle and boundaries. Typically, such forces are modeled in manoeuvring simulation systems on the basis of empiric methods or simplified theoretical models. In many cases, however, these forces are mainly of potential nature and can be effectively estimated with a double-body approximation potential code. Such a procedure has been developed on the basis of the classic Hess–Smith method with estimation and subtraction of proper inertial forces expressed in the same way as in the Thomson–Tait–Kirchhoff equations. Reasonably accurate estimates of integral interaction forces were obtained with the number of panels small enough to make online computation possible even with a moderately fast hardware. No restrictions are imposed on the mutual instantaneous position, motion and accelerations of the interacting objects Presented are simulated trajectories and time histories for two interacting ships in uncontrolled and controlled motion.
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