A Hybrid Particle-Grid Scheme for Computing Hydroelastic Behaviors Caused by Slamming  

作　　者：Hidemi Mutsuda Suandar B aso Yasuaki Doi 

机构地区：[1]Division of Energy and Environmental Engineering, Hiroshima University, Higashi-Hiroshima city 739-852 7, Japan [2]Department of Naval Architecture, Faculty of Engineering, Hasanuddin University, South Sulawesi 90245, Indonesia

出　　处：《Journal of Shipping and Ocean Engineering》2014年第1期15-26,共12页船舶与海洋工程（英文版）

摘　　要：Capable and accurate predictions of some effects of strongly nonlinear interaction wave-ship associated with hydroelastic behaviors are very required for simulation tool in naval architect and ocean engineering. It can guarantee ship safety at the sea state by producing proper design. Therefore, we have developed a hybrid scheme based on both grid and particle method. In order to clarify hydroelastic behaviors of a ship, a dropping test of a ship with elastic motion has been performed firstly. The developed scheme has been then validated on ship dropping case under the same conditions with experiment. The comparisons showed consistently in good agreement. Furthermore, evaluation on hydroelastic behaviors of ship motion under slamming, the impact pressure tends to increase in increasing Froude number. （Fn） The bending moment and torque defined at the centre gravity due to hogging and sagging events can be predicted well, and their effects on the ship increase in increasing wave length even though the impact pressure decreases in increasing wave length after wave length λ/L, where L is ship length, is equal to 1.0. Moreover, hydroelastie behaviors affect the large heave and pitch amplitudes. Finally, the developed scheme can predict simultaneously hydrodynamic and hydroelastic with a strongly nonlinear interaction between wave and ship.

关 键 词：Impact pressure ship slamming HYDROELASTICITY grid based method particle based method. 

分 类 号：U676.1[交通运输工程—船舶及航道工程] TH135[交通运输工程—船舶与海洋工程]