The Hydrodynamic Characteristics Analysis Of Small Water-plane Area Twin Hull(SWATH)

As a kind of high performance maritime traffic tool,the SWATH has got more attention.In order to ensure the stablelity of catamaran in mooring condition,it is very important to study the hydrodynamic performance of catamaran.In this paper,a water-borne monocoque ship with a total length of 97.9 m is taken as the object of study,and its hydrodynamic performance in regular and irregular waves is calculated and analyzed,and the hydrodynamic performance of mooring system and hull and a new mooring scheme is proposed to solve the collision problem.The main work includes:1)The finite element modeling and unit division of catamarans are carried out using classical ANSYS.Then the AQWA module is used to solve the motion response of the SWATH of the catamaran in the regular wave,and the parameters of the ANSYS software and the problems in the software application are put forward.The frequencies at different water depths and different wave-Domain movements are worked out.Then we can draw the conclusion.2)Using the finite element analysis software Orcaflex to solve the SWATH movement in the irregular wave.The effects of different water depths,different wave directions,different flow velocities,different wind speeds and different wave loads on SWATH motion are discussed.3)In the time domain calculation,the collision between the bow of the bow and the mooring system is discussed.The effects of different water depths,different wave directions,different flow velocities,different wind speeds and different wave loads on the collision are discussed and discussed from the angles of collision frequency,collision position,collision energy and collision duration.4)According to the results of collision analysis,the position of the mooring system is analyzed,and then the method of adding the float to the mooring line is considered.The effect of the installation position on the impact response is discussed.Finally,the new mooring scheme is determined and the new mooring scheme is calculated and analyzed,and the effect of collision avoidance is tested.This paper presents an innovative approach to catamaran mooring.The research results provide a feasible solution to avoid the collision between the mooring system and the hull,and it has certain reference value for improving the safety and stability of the mooring system.