A Time-Domain Numerical Simulation for Free Motion Responses of Two Ships Advancing in Head Waves  

作　　者：PAN Su-yong CHENG Yong 

机构地区：[1]School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China

出　　处：《China Ocean Engineering》2024年第3期519-530,共12页中国海洋工程（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52271278 and 52111530137);the Natural Science Found of Jiangsu Province(Grant No.BK20221389);the Newton Advanced Fellowships(Grant No.NAF\R1\180304)by the Royal Society.

摘　　要：The constant panel method within the framework of potential flow theory in the time domain is developed for solving the hydrodynamic interactions between two parallel ships with forward speed.When solving problems within a time domain framework,the free water surface needs to simultaneously satisfy both the kinematic and dynamic boundary conditions of the free water surface.This provides conditions for adding artificial damping layers.Using the Runge−Kutta method to solve equations related to time.An upwind differential scheme is used in the present method to deal with the convection terms on the free surface to prevent waves upstream.Through the comparison with the available experimental data and other numerical methods,the present method is proved to have good mesh convergence,and satisfactory results can be obtained.The constant panel method is applied to calculate the hydrodynamic interaction responses of two parallel ships advancing in head waves.Numerical simulations are conducted on the effects of forward speed,different longitudinal and lateral distances on the motion response of two modified Wigley ships in head waves.Then further investigations are conducted on the effects of different ship types on the motion response.

关 键 词：ship motions time domain simulation forward speed different distances wave loads 

分 类 号：U661[交通运输工程—船舶及航道工程]